Peter got married 8 years ago. His present age is 6/5 times his age at the time of his marriage. Peter’s sister was 10 years younger to him at the time of his marriage. The age of Peer’s sister is:	Choose the most appropriate option:
A) 32 B) 36 C) 38 D) 39 E) 40
Sol.   Let Peter’s present age be x years. Then, his age at the time of marriage = (x - 8) years.   ∴ x = 6/5 (x - 8) ⇔ 5x = 6x - 48 ⇔ x = 48.   Peter’s sister’s age at the time of his marriage = (x - 8) - 10   = (x - 18) = 30 years.   ∴ Peter’s sister’s present age = (30 + 8)= 
<gadget id="calculator">(30 + 8)</gadget>
<output>38</output>
38 years.   Answer 38
<result>C</result>
Peter got married 8 years ago. His present age is 6/5 times his age at the time of his marriage. Peter’s sister was 10 years younger to him at the time of his marriage. The age of Peer’s sister is: