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John went to the store and purchased a apples, b bananas an

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John went to the store and purchased a apples, b bananas an  [#permalink]

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New post 13 Jan 2019, 22:25
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Difficulty:

  45% (medium)

Question Stats:

69% (01:42) correct 31% (01:54) wrong based on 54 sessions

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John went to the store and purchased a apples, b bananas and c cranberries. If the average number of pieces of each type of fruit purchased was 20 then how many apples were purchased?

1. John purchased 30 fewer apples than bananas and cranberries combined.

2. Total number of cranberries and bananas purchased was 15 fewer than the total number of pieces of fruit purchased.
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Joined: 27 Oct 2018
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Concentration: Strategy, International Business
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Re: John went to the store and purchased a apples, b bananas an  [#permalink]

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New post 14 Jan 2019, 02:11
Jazzmin wrote:
John went to the store and purchased a apples, b bananas and c cranberries. If the average number of pieces of each type of fruit purchased was 20 then how many apples were purchased?

1. John purchased 30 fewer apples than bananas and cranberries combined.
2. Total number of cranberries and bananas purchased was 15 fewer than the total number of pieces of fruit purchased.

Given : a + b + c = 20*3 = 60

statement 1:
a + 30 = b + c
a + a + 30 = 60, then a = 15 :: sufficient

statement2:
b + c = 60 - 15 = 45, then a = 15 :: sufficient

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Re: John went to the store and purchased a apples, b bananas an  [#permalink]

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New post 14 Jan 2019, 09:31
chetan2u, @Bunuel:-Can we simply multiply average by 3 if we have average of each as 20?
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Re: John went to the store and purchased a apples, b bananas an   [#permalink] 14 Jan 2019, 09:31
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John went to the store and purchased a apples, b bananas an

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