A) 5 : 2
B) 5 : 3
C) 10 : 3
D) 11 : 5
Correct Answer: C
Solution :
Let 5 yr ago, the son's age be xyr and man's age be 5x yr. Their present ages are\[\left( x+5 \right)yr\]and\[\left( 5x+5 \right)\,yr.\] \[3\left( x+5+2 \right)=\left( 5x+5+2 \right)\] \[\Rightarrow \] \[3\left( x+7 \right)=\left( 5x+7 \right)\Rightarrow 2x=14\] \[\Rightarrow \] \[x=7\] Ratio of present ages of man and son \[=(5\times 7+5):(7+5)=40:12=10:3\]You need to login to perform this action.
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