A) 70 years
B) 50 years
C) 40 years
D) 60 years
Correct Answer: B
Solution :
[b] Let the A's age and B's age was 8x and 13x According to question \[\frac{8x+18}{13x+18}=\frac{5}{7}\] \[\Rightarrow 56x+18\times 7=65x+18\times 5\] \[\Rightarrow \] \[65x-\,56x=18\times 7-\,18\times 5\] \[\Rightarrow \] \[9x=18\times 2\] \[\Rightarrow \] \[x=4\] Hence, the present age of A \[=8\times 4+18=50\,\,yrs.\]You need to login to perform this action.
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