4

Set 3: Percentages

Explanation

Answer: B

A town's population was 250. It increased by 100%. What is the new population?

A.

510

B.

500

✓ Correct
C.

250

D.

490

Detailed Explanation

Choice B is correct. 1. Original: 250 Increase: 100% × 250 = 250 New value: 250 + 250 = 500 Therefore, the new population is 500.

Key Steps:

The correct answer is 500

Why others are wrong:
A: This would give an incorrect result. Choice A is incorrect and may result from a calculation error.
C: This would give an incorrect result. Choice C is incorrect and may result from a calculation error.
D: This would give an incorrect result. Choice D is incorrect and may result from a calculation error.

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