If the average of five numbers is -10, and the sum of three of the numbers is 16, then what is the average of the other two numbers?
- 20
- 5
- -1
- -33
Explanation
Sum of the 5 number = -10 * 5 = -50
Sum of the 3 numbers = 16
Sum of other 2 numbers = -50 - 16 = -66
Average of the 2 numbers = -66/2 = -33.
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