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the cost of the fifth pair of pants

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Carcass
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the cost of the fifth pair of pants [#permalink] New post   08 Sep 2022, 06:38
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William bought 4 pairs of pants for $80. The next day, he purchased another pair of pants. He spent an average of $22.50 for the five pairs of pants.

Quantity A
Quantity B
$30
the cost of the fifth pair of pants


A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given

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B
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Re: the cost of the fifth pair of pants [#permalink] New post   12 Sep 2022, 11:09
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Carcass wrote:
William bought 4 pairs of pants for $80. The next day, he purchased another pair of pants. He spent an average of $22.50 for the five pairs of pants.

Quantity A
Quantity B
$30
the cost of the fifth pair of pants


A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given



\(P_1 + P_2 + P_3 + P_4 = 80\) ...... (1)

\(P_1 + P_2 + P_3 + P_4 + P_5= 5(22.50) = 112.5\) ...... (2)

Using 1 and 2:

\(80 + P_5 = 112.5\)

\(P_5 = 32.5\)

Col. A: 30
Col. B: 32.5

Col. A < Col. B
Hence, option B
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Re: the cost of the fifth pair of pants [#permalink]
12 Sep 2022, 11:09
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