In 1985, 45 percent of a document storage facility's 60

Question

In 1985, 45 percent of a document storage facility's 60 customers were banks, and in 1987, 25 percent of its 144 customers were banks. What was the percent increase from 1985 to 1987 in the number of bank customers the facility had?

A) 10.7%
B) 20%
C) 25%
D) \(33 \frac{1}{3}%\)
E) \(58 \frac{1}{3}%\)

A) 10.7%
B) 20%
C) 25%
D)  33 \frac{1}{3}% 
E)  58 \frac{1}{3}%

Bunuel · Accepted Answer

General formula for percent increase or decrease, (percent change):  percent=\frac{Change}{Original}*100 .

Banks in 1985 - 0.45*60=27;
Banks in 1985 - 0.25*144=36;

percent=\frac{Change}{Original}*100=\frac{36-27}{27}*1001=\frac{1}{3}*100=33\frac{1}{3}%

Answer: D.

rajeevrks27 · Answer

No of bank customers in 1985 = 60 x .45 = 27 No of bank customers in 1987 = 144 x .25 = 36 increase in % = 100 X 9/27 = 100/3 or 33 1/3 D is the correct answer

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In 1985, 45 percent of a document storage facility's 60

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