The sum of five numbers is 655. The average of the first two numbers is 77 and the third number is 128. Find the average of the remaining two numbers?
Given:
Sum of five numbers = 655
Average of first two numbers = 77
Third number = 128
Formula Used:
Sum of remaining two numbers = Total sum − Sum of first three numbers
Average of remaining two = Sum of remaining two ÷ 2
Solution:
Sum of first two = 77 × 2 = 154
Sum of remaining two = 655 - (154 + 128)
= 655 - 282
= 373
Average of remaining two = = 186.5
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