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Re: In one day, Juan sends Keith three times as many messages as
[#permalink]
04 Jun 2017, 15:41
Explanation
It’s an algebra question with numbers for answer choices, so set up your scratch paper to plug in the answers.
The answers represent the number of messages Keith receives from Juan, so label them K, or something similar, and give yourself columns for L, which is K ÷ 3, and M, which is 4.5 × L.
Start with choice (C). If K = 16, then L is a fraction; since you can send a fractional message, eliminate choice (C)—and go ahead and eliminate choice (E), since it’s also not divisible by 3. Next, try choice (B), since it’s the middle of the remaining 3 answer choices. If
K = 12, then L = 4 and M = 18. That’s the correct number of messages for Missy, so choice B is correct.