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Two hundred gallons of fuel oil are purchased at $0.91 per gallon and are consumed at a rate of $0.70 worth of fuel per

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by Gmat_mission » Sun Jun 14, 2020 2:36 pm
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Two hundred gallons of fuel oil are purchased at $0.91 per gallon and are consumed at a rate of $0.70 worth of fuel per hour. At this rate, how many hours are required to consume the 200 gallons of fuel oil?

(A) 140
(B) 220
(C) 260
(D) 322
(E) 330

[spoiler]OA=C[/spoiler]

Source: Official Guide
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Re: Two hundred gallons of fuel oil are purchased at $0.91 per gallon and are consumed at a rate of $0.70 worth of fuel

by Scott@TargetTestPrep » Sat Jun 20, 2020 2:38 pm
Gmat_mission wrote: ↑
Sun Jun 14, 2020 2:36 pm
 Two hundred gallons of fuel oil are purchased at $0.91 per gallon and are consumed at a rate of $0.70 worth of fuel per hour. At this rate, how many hours are required to consume the 200 gallons of fuel oil?

(A) 140
(B) 220
(C) 260
(D) 322
(E) 330

[spoiler]OA=C[/spoiler]

Source: Official Guide
Solution:

The cost for the two hundred gallons is 0.91 x 200 = 182 dollars.

Thus, the number of hours to consume 200 gallons of fuel is 182/0.7 = 260.

Answer: C

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