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Numerical Ability
Age Problem
The ratio of mother's age to the daughter's age is 4:1 . The product of their ages is 196. The ratio of their ages after 8 years will be?
[A] 12:5
[C] 12:9
[B] 5:4
[D] 6:8
Read Solution (Total 3)
-
- Option A 12:5
Let the present age is x then 4x^2=196
x=7
Age after 8 years is 4x+8:x+8
There fore 36:15=12:5 - 12 years agoHelpfull: Yes(7) No(0)
- according to the ratio
mother age be:4x
daughter age be:x
product of their ages:(4x)(x)=196;
so,x=7,
mother age:4*7=28;
daughter:7;
after 8 years:
mother=8+28=36;
daughter=8+7-15;
ratio:36/15=12/5;
therefore ratio is 12:5;
option a;
- 10 years agoHelpfull: Yes(1) No(0)
- m=4z,d=z.
4z^2=196
z=7
a)12:5 - 10 years agoHelpfull: Yes(0) No(0)
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