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# If 15 pies cost a total of \$11.50, then at this rate, what is the cost

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Math Expert
Joined: 02 Sep 2009
Posts: 58402
If 15 pies cost a total of \$11.50, then at this rate, what is the cost  [#permalink]

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08 Oct 2019, 23:58
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If 15 pies cost a total of \$11.50, then at this rate, what is the cost of 9 pies?

(A) \$6.75

(B) \$6.90

(C) \$7.50

(D) \$8.50

(E) \$9.45

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Joined: 20 Aug 2017
Posts: 36
Re: If 15 pies cost a total of \$11.50, then at this rate, what is the cost  [#permalink]

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09 Oct 2019, 00:22
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Bunuel wrote:
If 15 pies cost a total of \$11.50, then at this rate, what is the cost of 9 pies?

(A) \$6.75

(B) \$6.90

(C) \$7.50

(D) \$8.50

(E) \$9.45

we need to find the cost of 9 pies.
9 is 60% of 15.
so the total amount is 60% of 11.5\$ or 3/5*11.50 = 6.90\$

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Re: If 15 pies cost a total of \$11.50, then at this rate, what is the cost   [#permalink] 09 Oct 2019, 00:22
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