A town of 40,000 people grew by 5% in one year. What is its new population?

Correct answer: A. 42,000

5% of 40,000 is 2,000 (1% is 400, so 5% is 2,000). The new population is 40,000 + 2,000 = 42,000. Finding 1% first is a reliable mental method.

easy

Answer and explanation

The correct answer is A. 42,000

5% of 40,000 is 2,000 (1% is 400, so 5% is 2,000). The new population is 40,000 + 2,000 = 42,000. Finding 1% first is a reliable mental method.