Civil Service Exam Reviewer · Word Problems · hard

The sum of the ages of Ella and Pia is 74. 4 years ago, Ella was 5 times as old as Pia. How old is Pia now?

  1. 15 years old
  2. 59 years old
  3. 11 years old
  4. 12.33 years old

Answer

A. 15 years old

Solution

Let Pia = x, Ella = 74 − x. 74 − x − 4 = 5(x − 4) → x = 15.

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