Multiple choice

There were 20% more books sold in February than the books sold in the previous month. If increase in books sold was 124, then find the average number of books sold in the 2 months.

  1. 682

  2. 615

  3. 716

  4. 511

  5. 820
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let sales in previous month be x. Current month = 1.2x. Increase = 0.2x = 124, so x = 620. Current month = 744. Average = (620 + 744) / 2 = 682.

AI explanation

The 124 books represent the 20% increase over the previous month's sales, so the original number of books sold in January is calculated as 124 / 0.20 = 620. The number of books sold in February is 620 + 124 = 744. Using the average formula, the average sales for the two months is (620 + 744) / 2 = 1364 / 2 = 682.

Keep practicing — related questions