Official Guide Explanation:
Problem Solving #D08

Background

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Solution and Metadata

Question: D08
Page: 21
Difficulty: 5 (Moderate)
Category 1: Arithmetic > Fractions >
Category 2: Word Problems > Other >

Explanation: This is an excellent question to assign numbers to the variables. If December revenue is 100, the November revenue is 40. If January is (1/4) of that, it's 10. The average of Nov and Jan revenue is 25, so December revenue (100) is 4 times that average. Choice (E) is correct.

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