A) 20 years
B) 45 years
C) 40 years
D) 50 years
Correct Answer: D
Solution :
Let the present age of Dennis and his father be x andy respectively. Then \[x=\frac{1}{3}y\] ??.(i) and \[\left( x-5 \right)=\frac{1}{4}\left( y-5 \right)\] ?....(ii) From Eqs. (i) and (ii) \[\text{y}=\text{45 yr}.\] Hence, required age \[=\left( x+\text{5} \right)=\text{5}0\text{ yr}\text{.}\]You need to login to perform this action.
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