In the year 2000, Monu was 3 times his sister’s age. In 2010, he was 24 years older than her. Find Monu’s age in 2010.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 46 years.
Let the age of Monu in 2000 be M years.
Age of Monu's sister in 2000 = M/3 years
Age of Monu in 2010 = (M + 10) years
According to the given question,
M + 10 = (M/3 + 10) + 24
⇒ M - M/3 = 24
⇒ 2M = 72
⇒ M = 36
Age of Monu in 2010 = 36 + 10 = 46 years