Source: Official Guide for the GMAT 13th Ed. Problem Solving; #15 Official Guide for the GMAT 2015 14th Ed. Problem Solving; #15

4

At a supermarket, John spent 1/2 of

At a supermarket, John spent 1/2 of his money on fresh fruits and vegetables, 1/3 on meat products, and 1/10 on bakery products. If he spent the remaining $6 on candy, how much did John spend at the supermarket?

5 Explanations

1

Abhishek Banerjee

Hi,
I took values from the options. Knowing the answer has to be multiple of 3, I first took 60 but it didn't fit. Then eliminated 80 (as it is not a multiple of 3). Then took 90 and it worked out.

Dec 16, 2019 • Comment

Adam Lyons, Magoosh Tutor

This is generally a fine idea! There's not too many options, so even just checking them straight up will get you the answer quickly. Once you see that $90 fits, you're done :)

Dec 24, 2019 • Reply

1

Ajosh John

let the total money be 'x'

1/2 of x + 1/3 of x +1/10 of x + 6 = 'X' dollars

therefore,

x/2 + x/3 + x/10 + 6 = x
solving for x,

x= 90

Dec 18, 2015 • Comment

Cydney Seigerman, Magoosh Tutor

Thanks for sharing your solution :) Great job!

Dec 20, 2015 • Reply

1

S S A Zahid

1/2+1/3+1/10 = 28/30 (or 14/15) is what he spent
2/30+28/30 = 30/30 = 1 is the Total
2/30 or 1/15 is the remaining, which is equal to $6
1/15 = 6, Total = (15)(6) = 90

Nov 9, 2015 • Comment

1

Usman Hamid

How come the remaining 6 is 1/15 of the total price? I'm confused! :/

Feb 4, 2015 • Comment

Sam Kinsman, Magoosh Tutor

Hi Usman, the question tells us that after spending 1/2, 1/10, and 1/3 of his money, John had $6 left. If we add up those fractions, we get 14/15. So we know that after spending 14/15 of his money, John had $6 left. We also know that if a person spends 14/15 of his or her money, the person will have 1/15 left (1 - 14/15 = 1/15). So therefore, we know that $6 = 1/15.

Oct 25, 2015 • Reply

2

Gravatar Mike McGarry, Magoosh Tutor

Dec 26, 2013 • Comment

Add Your Explanation

You must have a Magoosh account in order to leave an explanation.

Learn More About Magoosh

Official GMAT Material

Official Guide for GMAT Review 2016

Official Guide for the GMAT 2015 14th Ed.

Official Guide for the GMAT 13th Ed.

Nova's GRE Prep

Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.


Section 5.3 Problem Solving

Section 5.3 Problem Solving

Improve Your Score

Magoosh GMAT is an affordable online course for studying the GMAT.

Learn More About Magoosh

Share Post

Email

Facebook