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A certain olive orchard produces 315 gallons of oil annually

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GeminiHeat
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A certain olive orchard produces 315 gallons of oil annually [#permalink] New post   21 Mar 2020, 22:16
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A certain olive orchard produces 315 gallons of oil annually, on average, during four consecutive years. How many gallons of oil must the orchard produce annually, on average, during the next six years, if oil production for the entire 10-year period is to meet a goal of 378 gallons per year?

(A) 240
(B) 285
(C) 396
(D) 420
(E) 468
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D
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Re: A certain olive orchard produces 315 gallons of oil annually [#permalink] New post   27 Mar 2020, 11:35
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315 * 4 + x * 6 = 378 * 10
1260 + 6x = 3780
6x = 2520
x = 420

Answer is D.
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Re: A certain olive orchard produces 315 gallons of oil annually [#permalink] New post   24 Aug 2023, 03:29
Hello from the GRE Prep Club BumpBot!

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Re: A certain olive orchard produces 315 gallons of oil annually [#permalink]
24 Aug 2023, 03:29
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