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1. Arif has a brother one-third his age and a sister three times his age. If the combined ages of all 3 children is 5 less than twice the oldest, how old is Arif?

  • A. 6
  • B. 6
  • C. 6
  • D. 6

Answer: Option B

Explanation:

Now, x +  + 3x = 6x - 5

Or, 

Or, 13x = 18x - 15

Or, 5x = 15

Or, x = 3.

Hence, Arif is 3 years old.


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