Kirk sells cars. On two sales, Kirk has received commissions of $850, and $705, and he has one additional sale pending. If Kirk is to receive an average (arithmetic mean) commission of exactly $820 on the three sales, then the third commission must be:
Correct answer: B
Explanation
Let X be the third value.
850 + 705 + X = 820 * 3
=> 1555 + X = 2460
=> X = 905.
B
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Source: Algebra word problems from the AQuA-RAT dataset (Ling et al., 2017), published by Google DeepMind under the Apache License 2.0.
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AQuA-RAT items are crowdsourced algebra problems, not ACT questions. They carry five answer choices in the pre-2025 ACT Mathematics style and no ACT reporting category. Useful for drilling Preparing for Higher Math content; not a substitute for a real form.