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# A merchant paid \$300 for a shipment of x identical

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Joined: 21 Aug 2003
Posts: 258
Location: Bangalore
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A merchant paid \$300 for a shipment of x identical  [#permalink]  30 Sep 2003, 20:42
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A merchant paid \$300 for a shipment of x identical calculators. The merchant used 2 of the calculators as demonstrators and sold each of the others for \$5 more than the average (arithmetic mean) cost of the x calculators. If the total revenue from the sale of the calculators was \$120 more than the cost of the shipment, how many calculators were in the shipment?
(A) 24
(B) 25
(C) 26
(D) 28
(E) 30
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Joined: 12 Sep 2003
Posts: 31
Location: Peru
Followers: 0

Kudos [?]: 0 [0], given: 0

(5(X-2))-(600/X) = 120
5X-10-(600/X)=120
X=30
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