Question
The sum of five numbers is 655. The average of the first two numbers is 78 and the third number is 134. Find the average of the remaining two numbers?
The correct answer is
182.5
The sum of the five numbers is 655. The sum of the first two numbers is 78 × 2 = 156. The third number is 134. So, the sum of the first three numbers is 156 + 134 = 290. The sum of the remaining two numbers is 655 - 290 = 365. Therefore, the average of the remaining two numbers is 365 ÷ 2 = 182.5.
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