Hi All,

This question question is an example of a 'system' algebra question - but it can actually be solved in a variety of different ways, including Algebraically and by TESTing THE ANSWERS. If you recognize the ratio that exists begin the two sizes of cans, then you can also use that pattern to your advantage...

6 (25-ounce cans) = 150 ounces

10 (15-ounce cans) = 150 ounces

You can use THAT ratio (6:10) to work through this question relatively quickly...

6 and 10 = 4 more of the smaller cans

12 and 20 = 8 more of the smaller cans

18 and 30 = 12 more of the smaller cans

Etc.

We're told that the number of smaller cans that are needed would be 40 more than the number of larger cans. That would be...

6(10) and 10(10) =

60 and 100 = 40 more smaller cans

100 smaller cans would be needed

Final Answer:

GMAT assassins aren't born, they're made,

Rich

_________________

760+: Learn What GMAT Assassins Do to Score at the Highest Levels

Contact Rich at: Rich.C@empowergmat.com

# Rich Cohen

Co-Founder & GMAT Assassin

Special Offer:

Save $75 + GMAT Club Tests Free
Official GMAT Exam Packs + 70 Pt. Improvement Guarantee

www.empowergmat.com/
*****Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*****