A) 1 : 4
B) 2 : 5
C) 3 : 5
D) 5 : 6
Correct Answer: C
Solution :
Let the present ages of two brothers be x yr and 2x yr. Now, \[\frac{x-5}{2x-5}=\frac{1}{3}\] \[\Rightarrow \] \[3x-15=2x-5\Rightarrow 3x-2x=15-5\] \[\Rightarrow \] \[x=10\] \[\therefore \]Their present ages = 10 yr and 20 yr After 5 yr their required ratio \[=\frac{15}{20}=\frac{3}{5}=3:5\]You need to login to perform this action.
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