A set of 5 numbers has a mean of 25. If two numbers, 18 and 32, are added to the set, what is the new mean of the 7 numbers?

✓ Correct Answer: Option A

The sum of the original 5 numbers is 5 * 25 = 125. When 18 and 32 are added, the new sum is 125 + 18 + 32 = 175. The new set has 7 numbers. The new mean is 175 / 7 = 25.