A) 50 yr
B) 55 yr
C) 60 yr
D) 70 yr
Correct Answer: A
Solution :
Let the age of the elder son be x yr. Then, age of younger son \[=(x-15)\,yr;\] age of the father \[=2x\text{ }yr\]. So, \[2x+10=3(x-15+10)\] \[\Leftrightarrow \] \[2x+10=3x-15\] \[\Leftrightarrow \] \[x=25\] \[\therefore \] Father?s age \[=2x=50\,\,yr\]You need to login to perform this action.
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