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Source: GMAT Paper Tests
On 3 sales John has received commissions of $240, $80, and $110, and he has 1 sale pending. If John is to receive an average (arithmetic mean) commission of exactly $150 on the 4 sales, then the 4th commission must be
A. $164
B. $170
C. $175
D. $182
E. $185
The OA is B
On 3 sales John has received commissions of $240, $80, and $110, and he has 1 sale pending. If John is to receive an average (arithmetic mean) commission of exactly $150 on the 4 sales, then the 4th commission must be
A. $164
B. $170
C. $175
D. $182
E. $185
The OA is B
