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Source: Official Guide for GMAT Review 2016 Problem Solving; #90

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Yesterday's closing prices of 2,420 different stocks

Yesterday's closing prices of 2,420 different stocks listed on a certain stock exchange were all different from today's closing prices. The number of stocks that closed at a higher price today than yesterday was 20 percent greater than the number that closed at a lower price. How many of the stocks closed at a higher price today than yesterday?

2 Explanations

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Parijat Sinha

I made two equations and solved:
H=1.2L
H+L=2420 and solved for H

Your thoughts pls. Thanks.

May 31, 2016 • Comment

Cydney Seigerman, Magoosh Tutor

Great job :) Your method is an efficient way to get you to the correct final answer :) Thanks for writing and happy studying :D

Jun 1, 2016 • Reply

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Mike McGarry, Magoosh Tutor

Aug 14, 2015 • Comment

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Official Guide for GMAT Review 2016

Official Guide for the GMAT 13th Ed.

Official Guide for the GMAT 2015 14th Ed.

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Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.

Section 5.3 Problem Solving

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