SAT Math Multiple Choice Practice Question 130: Answer and Explanation

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Question: 130

20. If it takes x widgets to make one thingumajig, and one thingumajig can produce y whatchamacallits, then the number of widgets needed to produce n whatchamacallits is

B. nxy

Correct Answer: A


A. To solve this problem, I'll pick pretty numbers and say that 10 widgets makes a thingumajig and that a thingumajig can produce 2 whatchamacallits. So it takes 5 widgets, or x/y, to make one whatchamacallit. To make n whatchamacallits, you have to multiply by n, which is what Choice (A) tells you to do.

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