[quote author=dotcomnamename post=65873843][/quote]
Hahahahahahaha
Guy you are really wiked

this is too elementary and stale nah.
cause the trick cannot work without involving the number you have thought of.
the trick is that you keep subtracting your original chosen number and everybody keep getting the same answer.
eg for the first, let assume that the number we have thought is x. then from the the instruction we have: (2x+6)/2-x=x+3-x=3
so you get 3 regardless of the number you chose.
other question follow the same logic

good you clear air

cute
my celeb crush back in the days
for those of us saying he beat his wife are we sure he really did? don't really think is fair to judge him outrigthly

gross

these are how guys aught to look drooling already

PassingShot:

I actually thought the "successive" stmt was an error. Good to find out the result is same whether pipes turned on successively after the other or all turned on at once.
Thanks.

u'r welcome my love

PassingShot:
Your question is meant to read "how many minutes will be required to fill the tank if all pipes were switched on at the same time?"

The answer is 6.66 minutes. I will explain it:

Let the tank size x be assumed to be 100 liters.

If Pipe A can fill it in 20 minutes, pipe A pumps 5 liters per minute (100/20)
If Pipe B can fill it in 30 minutes, it then pumps 3.33 liters per minute (100/30min)
If Pipe C can fill it in 15 mins, then it pumps 6.6 liters per minute (100/15)

When all pipes are switched on together, they jointly pump about 15 liters per minute (5+3.33+6.6 liters).

Therefore, to fill 100 liter tank, 6.6666 approx. 6.76 minutes will be needed (100/15 liter per minute).

NB: Irrespective of the figure used for the tank capacity, the same result/answer will be achieved. The reason being that you will eventually divide the tank capacity assumed (30, 50, 100 or whatever figure) by what can be jointly pumped by the pipes in one minute (which varies according to capacity assumed).

Where is my prize OP?

Let me be clearer here. using the calculated flow rate above. flow rates: A=5l/m, B=3.33l/m, C=6.6l/m

for first minute only A contributes: 5liter; in the second mins, A & B contributes 5litres and 3.33liters respectively totaling 8.33liters
total liters contributed in the 1st and 2and minutes=13.33liters____ this implies that for the first two minutes 13.33liters of the tank is filled
remaining volume of tank to be fill=100-13.33= 86.67liters
3rd minute and above A, B & C contribute with a total flow rate of 15liters/min to fill 86.67liters and this will take 86.67/15=5.778min
hence the total time required=5.778+2=7.78mins

PassingShot:

For exam purpose, we have to simply find out the pump rate per pipe and do just as I did.
Employing your argument which may be valid in real life, then it is save to say there won't be an answer to the question.

sir, you are actually right going by your approach if the pipe are all ON simultaneously. had you factored the 'successive statement' then you would have been 100%. what I did was factoring the 'successive statement' using your calculated flow rates.

shinebabe:
The answer is approx. 6.67mins.

@passingshot. You are actually wrong about the pipes opening together or at the same time. The op us correct by saying the pipes were opened successively. This us because, practically, when you open all the pipes, flow rate generally reduces when compared to the flow rates taken from each of the pipes. What these flow rates reduce to may not be easily determined and would complicate the calculations here.

This is my core area, so I should know...

wow! happy that a fellow lady is doing this with me. actually sis the flow rate of the individual pipes are not affected in any way by the 'successive minutes' statement only imply that pipe A is ON for a minute before pipe B and then pipe C. this arrangement can only increase the time it takes to fill the tank than when they are all on simultaneously

PassingShot:
Your question is meant to read "how many minutes will be required to fill the tank if all pipes were switched on at the same time?"

The answer is 6.66 minutes. I will explain it:

Let the tank size x be assumed to be 100 liters.

If Pipe A can fill it in 20 minutes, pipe A pumps 5 liters per minute (100/20)
If Pipe B can fill it in 30 minutes, it then pumps 3.33 liters per minute (100/30min)
If Pipe C can fill it in 15 mins, then it pumps 6.6 liters per minute (100/15)

When all pipes are switched on together, they jointly pump about 15 liters per minute (5+3.33+6.6 liters).

Therefore, to fill 100 liter tank, 6.6666 approx. 6.76 minutes will be needed (100/15 liter per minute).

NB: Irrespective of the figure used for the tank capacity, the same result/answer will be achieved. The reason being that you will eventually divide the tank capacity assumed (30, 50, 100 or whatever figure) by what can be jointly pumped by the pipes in one minute (which varies according to capacity assumed).

Where is my prize OP?

you are nearly there if not for the statement 'one successive minutes. the answer is actually: for 2min A & B contributes 13.3mins hence the remaining volums is 1oo-13.3= 86.7; hence it will take A, B & C 86.7/15 =5.78min; therefore total min: 2+5.78= 7.78min

good for our democracy

my nominees are: Juliet Ibrahim, good skin and sexy colour, Ty Salvage and stephenie Okereke they are both tall, dark and sexy

hahaha. this is called free madness

she looks hot

lol,

Devdaz:
where did u see ur 9+4.... We only only have 8 T-squares apart from the 27 making it 35 squares alltogether

8 T-square you must be joking
actually, the intersection of the vertical and horizontal lines make up the 2unite square (OR MORE TECHNICALLY 4 UNITES SQUARE). this squares are unique and totalled to give us 9. the 3 unite square (OR MORE TECHNICALLY THE 9 UNITES SQUARE) are 4 in number. just open your eyes very well

now we take the 2 unit and 3 unit squares. we have 9 2unit squares and 4 3unit squares. this give 9+4=13 squares

adding this to the previous result gives: 27+13=40 squares

hence the total number of squares in the figure is 40

now discard the two smaller square and consider the lager square.
the larger square contain 16 small squares plus one large square ie a total of 17

adding this to the previous result we have 10+17= 27

www.nairaland.com/attachments/2551303_pussle_jpegdb20479d9e767d6d921af4d697e8f8ac

let unravel the puzzle together

let first of all consider the two smaller embedded square. each has 5 square i.e a total of 10

congrats to all that have attempted the puzzle you all tried. out of almost 200 that attempted just over 20 persons (i.e 10% ) got it right.

Whaoo! interesting answers so far

still no answer

keep making us proud chibu

still no answer

hmmm, too many person rooting for 27 why? you may show working to convince us

keep trying people...

MythAngel:

With the new lense of inquiry into the fabric of space and time . we understand better the classical laws which brought forth gravity. And the conclusion is that gravity as perceived is only a gross approximation of the whole picture ... To make you understand this Fact. You need to consider the experiment that confirmed Einstein's idea, that space is warped by energy and matter in it.. What this means , is that even light that we understood to travel in straight line , may not always take a straight path if the space its traveling in is warped by large mass such as the mass of the sun ... So now , with this in mind we could see that at the center of the earth, all the space around it is so great that you simply would be bent in by the dense space. As a summary it means your acceleration would increase towards the center as you fall , reaches its peak at the center but the same force that pulls you in would be the one to counter you moving away from it , hence you stocked ..and any hope to take you away would live you a vegetable

wow! am happy I finally see some one who talks science. we need more science and tech incline individual in Nigeria if we must move forward because it is what drive modern society forward. that said, @mythAngel the gravitational acceleration g is actually zero at the center of the Earth. the relationship between g at the surface and g' at any depth d inside the earth is given by g'= g(1-d/r) where r is the radius of the earth. just as I said in my previous post just beyond the center of the earth the gravitational force would tend to return the body back to the center (g' now acting backward note the formula) while the built up momentum as a result of the initial gravitational force would interact and balances out at a point where the subsisting gravitational force would tend to bring back the body toward the center and the circle continue in a simple harmonic motion.

this is too idealist and simplistic theoretical model with a whole lot of assumptions.

thanks MythAngel

wow! 40 views and no

nobody seemed to solve my little geometric pussle here https://www.nairaland.com/2400703/unravel-geometric-pussle#35096898

XavierBlue:
why not put your theory into experiment by digging the tunnel, then we would be sure that the electromagnetic impules, and motion would take place.

That facts was only to emphasize a point, only stating the time it'll take you to go through the earth to the other side.


XavierBlue

No no no! darline you misunderstood me here. all am saying is mainly on a theoretical physics point of view. the act of drilling a hole of over 12K kilometer may not be achieved in our life time. I only posit that if it were possible then content to the possibility of emergence at the other end of the earth's surface becomes a subject of gravity, center of gravity of the earth and the inertial of the falling body. I will try out this calculation maybe when am less busy. cheers

these guys in Rivers should just allow the statuesque to remain cos to me I see it as the best compromise___ PDP at the state level; APC at the LGA level