hopelink1:
CarlOzeki, Snowland, Tinkybabe, flawlesRebirth, misshoree, seun, Lalasticlala, Mynd44, eroticangel,
paranorman, vengeance, kobonaire.... YOUR
ATTENTIONS ARE NEEDED

hopelink1:
A contractor agreeing to finish a work in 150
days employed 75 men each working 10 hours
daily. After 90 days, only 1/4 of the work was
completed. Increasing the number of men by
…………. each working now for 15 hours daily, the
work can be completed in time.

Kenzico:
Am not good in maths....But this one looks sweet

Sibrah:
You increase the No of men by minimum of 18.85 but since men cannot be in fraction and question require the " additional number of men required to complete the job on time" it is 19 at minimum.
19

The question should be modified to request the minimum number of men request cos if any one gives an answer greater than the minimum required it will satisfy the condition that request "the number of men to be added to complete the job on time"

hopelink1:
you are wrong

chiefolododo:
you come dey mention Lalasticlala?

paranorman:

dude, the trick in solving this kinda question is to quantify the amount of work done or to be done yourself, if you cannot solve it straight.
Say total work to be done is 10000kg. For 150 days, twil take (100000/150)kg per day.

So, after 90 days, 1/4 of the work was done= 1/4(10000)kg=2500kg

work/day = (2500/90)kg

work/day/man = (2500/90)/75

work/day/man/hours=((2500/90)/75))/10= quantity of work that can be done per man for an hour.

According to contract, (150-90) days left, work is to be completed in 60days.

Work left to be done is 10000-2500;

after you have found work/day/man/hours, calculate amount of work done by a man for 15 hours.
Remember, new men will be added.

From this info, you should to able to manipulate and get your answer.

Damfash:
Definitely 150 men. Let me try and explain this in a simple way. The first set of men spent 900 hours (10 hours each day for 90 days). The second set of men also spent 900 hours(15 hours each day for 60 days). Knowing that they spent the same number of hours, if the first group (comprising 75 men) could do one quarter of a work, how many men would do three quarters (the remainder) of that same work under the same duration? This will be (75*3)=225. So, 225 men finised the work. By now, I hope you agree with me that 150 men were added.

hopelink1:
yea

octalbell:
This is my solution

Sibrah:
Provide a convincing explanation please. I believe your question isn't clear enough.

hopelink1:
1/4(x) is equivalent to 90days x 10hours x 75men and 3/4(x) is equivalent to 60days x 15hours x W men. Taking ratio of These equation i. E
1
---x = 90 x 10 x 75
4
--- - - - - - - - - - -
3
--x = 60*15*W
4



W, the total number of men to complete the job from This equation is 225, These for it requires (225--75)=150men to complete 3/4 of the work in the remaining 60 days if They work for 15hours per day

hopelink1:
A contractor agreeing to finish a work in 150
days employed 75 men each working 10 hours
daily. After 90 days, only 1/4 of the work was
completed. Increasing the number of men by
…………. each working now for 15 hours daily, the
work can be completed in time.

misshoree:
Am not a mathematician, I deal with drugs

misshoree:
Am not a mathematician, I deal with drugs

CarlOzeki, Snowland, Tinkybabe, flawlesRebirth, misshoree, seun, Lalasticlala, Mynd44, eroticangel,
paranorman, vengeance, kobonaire.... YOUR
ATTENTIONS ARE NEEDED

Tinkybabe:


I'm sorry, just seeing the mention.
Ans= 150

Let total work to be completed be X

It takes 75 men 10 hours to complete X/4 work in 90days

750 hrs x 90 = X/4
X =270,000 arbitrary unit

We have only (150- 90)days left to complete the work at 15 hours per person. If total no of people required to complete the remaining job is R
Then

15R x 60 =3/4 X
Note X =270,00

R = 225

Men to be added to previous is 225- 75 = 150 men

paranorman:

brilliant gurl!

Paranorman!! Long time!
You maths whiz
Compliments of the season.

Tinkybabe:


Paranorman!! Long time!
You maths whiz
Compliments of the season.

kobonaire:
@Tinkybabe solution is spot-on. I question the legality/ability of people to work 15 hour days for 60 days continually ...

Tinkybabe:
Thanks Paranorman.



Legality is indeed questionable but ability is not only possible but happening .

How are you?