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A survey reveals that the average income of a company’s customers is \$

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Joined: 02 Sep 2009
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A survey reveals that the average income of a company’s customers is \$  [#permalink]

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11 Feb 2019, 03:05
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(N/A)

Question Stats:

33% (02:33) correct 67% (02:13) wrong based on 6 sessions

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A survey reveals that the average income of a company’s customers is \$45,000 per year. If 50 customers respond to the survey and the average income of the wealthiest 10 of those customers is \$75,000, what is the average income of the other 40 customers?

(A) \$27,500
(B) \$35,000
(C) \$37,500
(D) \$42,500
(E) \$50,000

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Posts: 1162
Concentration: Accounting, Finance
GPA: 3.68
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Re: A survey reveals that the average income of a company’s customers is \$  [#permalink]

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11 Feb 2019, 03:21
Bunuel wrote:
A survey reveals that the average income of a company’s customers is \$45,000 per year. If 50 customers respond to the survey and the average income of the wealthiest 10 of those customers is \$75,000, what is the average income of the other 40 customers?

(A) \$27,500
(B) \$35,000
(C) \$37,500
(D) \$42,500
(E) \$50,000

Total = 50*45000 = 2250000

Total of 10 wealthiest = 10 * 75000 = 750000

Remaining amounts = 2250000 - 750000 = 1500000

1500000 / 40 = 37500

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Re: A survey reveals that the average income of a company’s customers is \$  [#permalink]

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11 Feb 2019, 03:26
Bunuel wrote:
A survey reveals that the average income of a company’s customers is \$45,000 per year. If 50 customers respond to the survey and the average income of the wealthiest 10 of those customers is \$75,000, what is the average income of the other 40 customers?

(A) \$27,500
(B) \$35,000
(C) \$37,500
(D) \$42,500
(E) \$50,000

total income sum = 45000*50 ; 2250000
wealthiest income sum = 75000*10 ; 750000
so 40 customers sum = 2250000-750000= 15*10^5
avg 15*10^5/40 = \$37,500

IMO C
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Re: A survey reveals that the average income of a company’s customers is \$   [#permalink] 11 Feb 2019, 03:26
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