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# If the average of five numbers is -10, and the sum of three of the num

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Math Expert
Joined: 02 Sep 2009
Posts: 58396
If the average of five numbers is -10, and the sum of three of the num  [#permalink]

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Updated on: 07 Jul 2019, 01:23
00:00

Difficulty:

15% (low)

Question Stats:

83% (01:32) correct 17% (01:50) wrong based on 18 sessions

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If the average of five numbers is -10, and the sum of three of the numbers is 16, then what is the average of the other two numbers?

(A) –33
(B) –1
(C) 5
(D) 20
(E) 25

Source: Nova GMAT
Difficulty Level: 600

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Originally posted by Bunuel on 09 Apr 2019, 23:21.
Last edited by SajjadAhmad on 07 Jul 2019, 01:23, edited 1 time in total.
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Joined: 31 Oct 2013
Posts: 1467
Concentration: Accounting, Finance
GPA: 3.68
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Re: If the average of five numbers is -10, and the sum of three of the num  [#permalink]

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10 Apr 2019, 00:16
1
Bunuel wrote:
If the average of five numbers is -10, and the sum of three of the numbers is 16, then what is the average of the other two numbers?

(A) –33
(B) –1
(C) 5
(D) 20
(E) 25

Sum of the 5 number = -10 * 5 = -50

Sum of the 3 numbers = 16

Sum of other 2 numbers = -50 - 16 = -66

Average of the 2 numbers = -66/2 = -33.

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Re: If the average of five numbers is -10, and the sum of three of the num  [#permalink]

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10 Apr 2019, 01:27
Bunuel wrote:
If the average of five numbers is -10, and the sum of three of the numbers is 16, then what is the average of the other two numbers?

(A) –33
(B) –1
(C) 5
(D) 20
(E) 25

sum of 5 no = -50
and 3 no = 16
so of other two sum = -66
and avg= -33
IMO A
Re: If the average of five numbers is -10, and the sum of three of the num   [#permalink] 10 Apr 2019, 01:27
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