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Mathematical Puzzles Medium 2 min

The average of five numbers is 24. Four of the numbers are 18, 22, 25 and 30. What is the fifth number?

Hint
Find the required total first.

Answer

25.

Explanation

The total of five numbers is 5 × 24 = 120. The four known numbers total 95, so the fifth number is 25.

Step-by-Step Solution

Total = 5 × 24 = 120.
Known total = 18+22+25+30 = 95.
Fifth number = 120-95 = 25.
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