A) 20 years
B) 60 years
C) 25 years
D) 40 years
Correct Answer: D
Solution :
Let the present age of son = x \[\therefore \] age of father \[=30x\] After 18 years, the age of father and son will be \[(30x+18)\] and \[(x+18)\] respectively. \[\therefore \] By question, \[(30x+18)=3(x+18)=3x+54\] \[\therefore \] \[30x-3x=54-18\] \[\therefore \] \[27x=36\] \[\therefore \] \[x=\frac{36}{27}\] \[\therefore \] age of father = 30x \[=30\times \frac{36}{27}=40\]years.You need to login to perform this action.
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