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Four students contributed to a charity drive, and the average (arithme

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Math Expert
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Joined: 02 Sep 2009
Posts: 58445
Four students contributed to a charity drive, and the average (arithme  [#permalink]

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New post 18 Dec 2018, 00:07
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

92% (00:43) correct 8% (01:03) wrong based on 28 sessions

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D
Joined: 31 Oct 2013
Posts: 1465
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
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Re: Four students contributed to a charity drive, and the average (arithme  [#permalink]

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New post 18 Dec 2018, 03:17
Bunuel wrote:
Four students contributed to a charity drive, and the average (arithmetic mean) amount contributed by each student was $20. If no student gave more than $25, what is the minimum amount that any student could have contributed?

A. 4
B. 5
C. 6
D. 7
E. 8



Total donation = 20*4 = 80.

Max amount a student can give = 25

we are looking for smallest amount a student can donate. In order to do so , we must maximize the donation of 3 students .

3*25 = 75.

Smallest amount = 80 -75 = 5.

B is our correct answer.
GMAT Club Bot
Re: Four students contributed to a charity drive, and the average (arithme   [#permalink] 18 Dec 2018, 03:17
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Four students contributed to a charity drive, and the average (arithme

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