Source: Official Guide for the GMAT 13th Ed. Problem Solving; #102 Official Guide for the GMAT 2015 14th Ed. Problem Solving; #102

2

If T=5/9(K-32), and if T=290, then K=

If T=5/9(K-32), and if T=290, then K=

1 Explanation

3

Gravatar Mike McGarry, Magoosh Tutor

Dec 28, 2013 • Comment

Yuri Lucatto Sillis

Hi Mike.
Why can't I make the following:

290=(5k-160)/9
2610=5k-160
2450=5k
k=490, hence choice C

Jun 5, 2015 • Reply

Jonathan , Magoosh Tutor

Hi Yuri. You should have added 160 to 2450 before dividing by 5. It looks like you subtracted instead. Otherwise, your method works, though it involves calculating larger numbers and may therefore take longer. I hope that helps.

Jun 15, 2015 • Reply

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Section 5.3 Problem Solving

Section 5.3 Problem Solving

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