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## A rectangular floor that measures

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boomgoesthegmat Senior | Next Rank: 100 Posts
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Posted:
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#### A rectangular floor that measures

Thu Apr 28, 2016 1:27 pm

00:00

A

B

C

D

E

# Global Stats

Difficult

A rectangular floor that measures 8 meters by 10 meters is to be covered with carpet squares that each measure 2 meters by 2 meters. If the carpet squares cost $12 apiece, what is the total cost for the number of carpet squares needed to cover the floor? A)$200
B) $240 C)$480
D) $960 E)$1920

B

### GMAT/MBA Expert

Matt@VeritasPrep GMAT Instructor
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Thu Apr 28, 2016 2:11 pm
8/2 = 4, so we need 4 squares for the width.

10/2 = 5, so we need 5 squares for the length.

That means we need 4 * 5 => 20 squares. They're each $12, so the cost is 20*$12 => $240. Enroll in a Veritas Prep GMAT class completely for FREE. Wondering if a GMAT course is right for you? Attend the first class session of an actual GMAT course, either in-person or live online, and see for yourself why so many students choose to work with Veritas Prep. Find a class now! ### GMAT/MBA Expert Rich.C@EMPOWERgmat.com Elite Legendary Member Joined 23 Jun 2013 Posted: 9439 messages Followed by: 480 members Upvotes: 2867 GMAT Score: 800 Thu Feb 22, 2018 12:10 pm Hi All, We're told that a rectangular floor that measures 8 meters by 10 meters is to be covered with carpet squares that EACH measure 2 meters by 2 meters and the carpet squares cost$ 12 apiece. We're asked for the total cost for the number of carpet squares needed to cover the floor. The math in this question can be approached in a number of different ways. You might find it easiest to start with a small 'piece' of the carpet and work your way 'up.'

Since the squares are 2 meters by 2 meters, if way place 4 of those square pieces 'in a row', we'll end up with a piece that is 8 meters by 2 meters. That will cost 4($12) =$48.

If we lay down 5 of those 8x2 meter strips side-by-side along the 'long' edge, we'll have a rectangular piece that is 8x10 meters in length. That would cost 5($48) =$240

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