| A father is 7 yr older than the mother and the mother's age now is 3 times the age of the daughter. The daughter is 10 yr old now. What was the father's age when the daughter was born? [BSSC (CGL) 2015] |
A) 27 yr
B) 37 yr
C) 16 yr
D) 40 yr
Correct Answer: A
Solution :
| Daughter's present age = 10 yr |
| Mother's age \[=3\times 10=30\text{ }yr\] |
| \[\therefore \] Father's age \[=30+7=37\,yr\] |
| Hence, 10 yr before father's age |
| \[=37-10=27\,yr.\] |
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