Machine A puts out a yo-yo every 6 minutes. Machine B puts out a yo-yo every 9 minutes. After how many minutes will they have produced 10 yo-yos?
Correct answer: C
Explanation
A's speed = 3 yo-yos every 18 minutes
B's speed = 2 yo-yos every 18 minutes
A + B's speed = 3 + 2 = 5 yo-yos every 18 minutes
both together will finish 10 yo-yos in 36 minutes
correct option is C
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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.