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Can You Solve This Puzzle? by Kelklein(m): 9:07am On Feb 03, 2016 |
Quiz Time A girl went to school & the teacher asked how old are you? She replied I don't know, but I know that I'm half my mother's age. The teacher asked ok how old is your mother? She said I don't know but I know that my Dad is 5 yrs older than my mother. Teacher, how old is yor dad? She said I don't know but I know that if we add our ages the answer is 100 yrs... 1. How old is the girl? 2. How old is the mum? 3. How old is the dad? cc: Seun |
Re: Can You Solve This Puzzle? by JakeII(m): 10:07am On Feb 03, 2016 |
1. Girl is 19 years 2. Mum is 38 years 3. Dad is 43 years take girl's age=a Mum= b Dad= c Then ,a+b+c=100......eq1 a=b/2.....................eq2 b=c-5 c=b+5....................eq3 sub eq 2&3 into eq1 b/2+b+b+5=100 (b+2b+2b+10)/2=100 5b+10=200 5b=190 b=190/5 b=38 sub b=38 into eq2 a=38/2 a=19 sub b=38 into eq3 c=38+5 c=43 QED Na wa o....All these stuffs those days but till now, I've never applied them in my profession,Lol. |
Re: Can You Solve This Puzzle? by switcakes(f): 10:58pm On Feb 06, 2016 |
Let the mothers age be y Then daughter=y/2 Then father= y+5 Mother +daughter+ father= 100 Y+y/2 + y + 5 = 100 2y + y/2 = 100 - 5 5y/2 = 95 Y = 38 Mother =38 Daughter = 38/2 = 19 Father= 38+5= 43 |
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