ArithmeticQuestion 390 of 550

A food store lasts 20 people for 15 days. How many days does it last 30 people at the same rate?

  1. 22.5 days
  2. 7.5 days
  3. 12 days
  4. 10 days
Show answer

Correct answer: 10 days

The store = 20 × 15 = 300 person-days. Duration = 300 ÷ 30 = 10 days.

Test structure: ETEC guide to the GAT

Practice arithmetic

Questions last reviewed: 21 October 2026