| I am three times as old as my son. 15 yr hence, I will be twice as old as my son. The sum of our ages is |
A) 48 yr
B) 64 yr
C) 60 yr
D) 72 yr
Correct Answer: C
Solution :
| Let age of son be x yr. |
| Father's age \[=3x\] |
| 15 yr's, hence age of son \[=(x+15)\] |
| Age of father \[=3x+15\] |
| According to the question, |
| \[3x+15=2\,\,(x+15)\] |
| \[\Rightarrow \]\[3x+15=2x+30\]\[\Rightarrow \]\[x=15\] |
| Sum of ages \[=x+3x=4x=60\,\,yr\] |
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