A) 20
B) 60
C) 25
D) 40
E) 45
Correct Answer: D
Solution :
Son's present age\[=x;\]Father's present age \[=30x\] \[\Rightarrow \]\[30x+18=3(x+18)\] \[\Rightarrow \]\[x=\frac{4}{3}.\] \[\therefore \] Father's present ageYou need to login to perform this action.
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