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Math Expert V
Joined: 02 Sep 2009
Posts: 60467
A rectangular floor that measures 8 meters by 10 meters is to be cover  [#permalink]

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Question Stats: 95% (00:50) correct 5% (00:53) wrong based on 1436 sessions

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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)$1,920

Kudos for a correct solution.

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Verbal Forum Moderator V
Status: Greatness begins beyond your comfort zone
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Location: India
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Re: A rectangular floor that measures 8 meters by 10 meters is to be cover  [#permalink]

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1
Number of carpets required to cover the entire floor = total floor area/ area of carpet
= 10x8 /2x2
= 20
Total cost of carpet squares = 20 x 12 = 240 $Answer B _________________ When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long CEO  D Status: GMATINSIGHT Tutor Joined: 08 Jul 2010 Posts: 2981 Location: India GMAT: INSIGHT Schools: Darden '21 WE: Education (Education) Re: A rectangular floor that measures 8 meters by 10 meters is to be cover [#permalink] ### Show Tags Bunuel wrote: 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) $1,920 Kudos for a correct solution. No. of Carpets required to Cover the floor = (8*10)/(2*2) = 20 Total Price to 20 pieces @$12 per piece = 12*20 = $240 Answer: option B _________________ Prosper!!! GMATinsight Bhoopendra Singh and Dr.Sushma Jha e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772 Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi http://www.GMATinsight.com/testimonials.html ACCESS FREE GMAT TESTS HERE:22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION Math Revolution GMAT Instructor V Joined: 16 Aug 2015 Posts: 8425 GMAT 1: 760 Q51 V42 GPA: 3.82 Re: A rectangular floor that measures 8 meters by 10 meters is to be cover [#permalink] ### Show Tags Forget conventional ways of solving math questions. In PS, IVY approach is the easiest and quickest way to find the answer. 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) $1,920 The width of the rectangular floor(8 m) is a multiple of one side of the square(2 m), and the length of the floor(10 m) is also a multiple of the side of the square. So the number of carpets to cover the floor is (8/2)*(10/2)=20. The total cost is 20*12=$240.

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Re: A rectangular floor that measures 8 meters by 10 meters is to be cover  [#permalink]

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Bunuel wrote:
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)$1,920

Kudos for a correct solution.

8 * 10 = 80m^2
2 * 2 = 4m^2

80 / 4 = 20

20 * $12 =$240

Senior Manager  G
Joined: 24 Nov 2015
Posts: 479
Location: United States (LA)
A rectangular floor that measures 8 meters by 10 meters is to be cover  [#permalink]

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$$Area of rectangular floor = 10*8 = 80 sq.metres$$

$$Area of small carpet squares = 2*2 = 4 sq.metres$$

$$Number of pieces required for carpeting = 80/4 = 20 pieces$$

$$cost of each piece = 12$$

$$Total cost = 20 *12 = 240$$

$$correct answer - B$$
Target Test Prep Representative G
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2806
Re: A rectangular floor that measures 8 meters by 10 meters is to be cover  [#permalink]

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Bunuel wrote:
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)$1,920

Kudos for a correct solution.

A rectangular floor with the dimensions of 8 meters by 10 meters needs to be covered by carpet squares. Each carpet square measures 2 meters by 2 meters and costs $12 per square. We must determine the total cost to cover the floor in carpet squares. Let’s start by determining the area of the floor and the area of each carpet square. Area of floor = 8 x 10 = 80 Area of each carpet square = 2 x 2 = 4 Thus, the total number of carpet squares needed to cover the floor = 80/4 = 20 carpet squares. Since the cost of each carpet square is$12, the total cost for 20 carpet squares = 20 x $12 =$240

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Re: A rectangular floor that measures 8 meters by 10 meters is to be cover  [#permalink]

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Bunuel wrote:
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)$1,920

Kudos for a correct solution.

Area of rectangular floor = 8 * 10 =>80

Area of a piece of carpet square = 2 * 2 => 4

No of pieces of carpet square required is = 80/4 =>20

Thus the total cost of Carpet square required to cover the rectangular floor will be 20 * 12 = $240 Answer will be (B) _________________ Thanks and Regards Abhishek.... PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only ) Target Test Prep Representative G Status: Head GMAT Instructor Affiliations: Target Test Prep Joined: 04 Mar 2011 Posts: 2806 Re: A rectangular floor that measures 8 meters by 10 meters is to be cover [#permalink] ### Show Tags Bunuel wrote: 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) $1,920 Kudos for a correct solution. A rectangular floor with the dimensions of 8 meters by 10 meters needs to be covered by carpet squares. Each carpet square measures 2 meters by 2 meters and costs$12 per square. We must determine the total cost to cover the floor in carpet squares. Let’s start by determining the area of the floor and the area of each carpet square.

Area of floor = 8 x 10 = 80

Area of each carpet square = 2 x 2 = 4

Thus, the total number of carpet squares needed to cover the floor = 80/4 = 20 carpet squares.

Since the cost of each carpet square is $12, the total cost for 20 carpet squares = 20 x$12 = $240 Answer: B _________________ # Jeffrey Miller Head of GMAT Instruction Jeff@TargetTestPrep.com See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews If you find one of my posts helpful, please take a moment to click on the "Kudos" button. Senior Manager  Joined: 23 Apr 2015 Posts: 275 Location: United States Concentration: General Management, International Business WE: Engineering (Consulting) Re: A rectangular floor that measures 8 meters by 10 meters is to be cover [#permalink] ### Show Tags No. of 2 by 2 Carpets required to Cover the floor = (8*10)/(2*2) = 20 Total Price to 20 pieces ($12 per piece) = 12*20 = $240 VP  V Joined: 23 Feb 2015 Posts: 1450 Re: A rectangular floor that measures 8 meters by 10 meters is to be cover [#permalink] ### Show Tags Bunuel wrote: 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) \$1,920

Kudos for a correct solution.

Area of floor=10*8=80
Area of carpet=2*2=4
So, carpet need to cover the floor=80/4=20 pieces
So, total cost of will be=20*12=240 dollars.
So, the correct answer is B.
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