ArithmeticQuestion 298 of 550

A number increases by 20% and becomes 90. What is the original number?

  1. 72
  2. 70
  3. 75
  4. 108
Show answer

Correct answer: 75

Original number × 1.2 = 90. So the original number = 90 ÷ 1.2 = 75.

Test structure: ETEC guide to the GAT

Practice arithmetic

Questions last reviewed: 21 October 2026