check your maths

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Situation:- Calling all maths geniuses to try this...

A mother is 21 years older than the child. 6 years from now the mother will be 5 times as old as the child.

 

 

 

Question:- Where's the father?

 

 

 

check the post below for solution

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Solution:-

 

The mother is 21 years older than the child.

 

M = C + 21..............(i)

 

In 6 years from now the mum will be 5 times as old as the child.

 

M + 6 = (C + 6) x 5.......(ii)

 

Hence,

 

putting in the value of M from equation (i) in equation(ii)

 

C + 21 + 6 = (C + 6) x 5

 

C + 27 = 5C + 30

 

-3 = 4C

 

C = -3/4

 

The child is -3/4 years old, that is, it'll be born in 9 months.

Thus.. by mathematical induction....

Right now, the father is on top of the mother...