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A rectangular floor that measures 8 meters by 10 meters is

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A rectangular floor that measures 8 meters by 10 meters is [#permalink] New post 09 Oct 2008, 03:58
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
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Re: math--carpet [#permalink] New post 09 Oct 2008, 04:04
albany09 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


area = 80, carpet area = 4 thys we need 20 pieces

12*20 = 240
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Re: math--carpet [#permalink] New post 09 Oct 2008, 04:07
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Carpat Area : 8 * 10 = 80

Square : 2 * 2 = 4

total no. of square = 80 / 4 = 20

each piece cost us 12 so 20 piece will cost us 20 *12 = 240

Thanks
Re: math--carpet   [#permalink] 09 Oct 2008, 04:07
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A rectangular floor that measures 8 meters by 10 meters is

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