Machine A and Machine B produce widgets at constant rates. How many widgets does Machine A produce in 4 hours?

Question

BrainForge Quiz · Accepted Answer

C) Both statements together are sufficient, but neither statement alone is sufficient.. (1) A + B = 50 widgets/hour. Insufficient. (2) B = 25 widgets/hour. Insufficient. Together: Substitute B=25 into (1) gives A+25=50, so A=25 widgets/hour. In 4 hours, A produces 4 * 25 = 100 widgets. Sufficient.

Machine A and Machine B produce widgets at constant rates. How many widgets does Machine A produce in 4 hours?

✓ Correct Answer: Option C

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