The respective ratio between Parul's present age and Rohit's present age is 7: 5. The sum of their ages 5 yr from now will be 94. After how many years, Rohit's age will be equal to Parul's present age? [IBPS (SO) IT 2014] |
A) 21
B) 7
C) 14
D) 18
E) 24
Correct Answer: C
Solution :
Let Parul's present age be 7x and Rohit's present age be 5x. |
Then, \[7x+5x+10=94\] |
\[\Rightarrow \] \[12x=84\]\[\Rightarrow \]\[x=7\] |
So, Parul's present age \[=7\times 7=49\,yr\] |
Rohit's present age \[=5\times 7=35\,yr\] |
After 14 yr Rohit's age will be equal to parul's present age. |
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