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You are here: Home / Official GMAT Guides / 2018 Official GMAT Guide /

Question 150 Problem Solving 2018 GMAT Official Guide

Question 150 Problem Solving 2018 GMAT Official Guide

 
Video explanation: If Jake loses 8 pounds, he will weigh twice as much as his sister…

Comments

  1. Alejandro says

    January 30, 2022 at 8:50 AM

    when you have the two equations it’s much simpler to deduct one from the other one and you get 3S=270, S=90. Then replace 278 – 90 gives you 188, E

    Reply
  2. GMAT Quantum says

    April 25, 2022 at 1:14 PM

    Absolutely right. In this case, solving for $S$ first is arithmetically faster, although not by a huge margin to make a big difference. In general, I will solve for the variable that is listed in the question.

    Reply

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