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percentage problems

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by 7-11 » Tue Jul 02, 2013 2:51 am
1. Audrey went shopping with D dollars. She spent 20 percent of her money on a blouse and 25 percent of what was left on a pair of shoes. What percent of the original D dollars did she spend?
(A) 25%
(B) 40%
(C) 45%
(D) 47%
(E) 50%

2. At a Wall Street company, 70 percent of this year's new employees are graduates of business schools and the remainders are graduates of liberal arts colleges. If 550 new employees were hired this year, what is the difference between the number of new business school employees and the number of new liberal arts employees?
(A) 55
(B) 220
(C) 240
(D) 385
(E) 440
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Source: — Problem Solving |

by ganeshrkamath » Thu Jul 04, 2013 3:10 am
7-11 wrote:1. Audrey went shopping with D dollars. She spent 20 percent of her money on a blouse and 25 percent of what was left on a pair of shoes. What percent of the original D dollars did she spend?
(A) 25%
(B) 40%
(C) 45%
(D) 47%
(E) 50%

2. At a Wall Street company, 70 percent of this year's new employees are graduates of business schools and the remainders are graduates of liberal arts colleges. If 550 new employees were hired this year, what is the difference between the number of new business school employees and the number of new liberal arts employees?
(A) 55
(B) 220
(C) 240
(D) 385
(E) 440
1.(B)
100 - 20 = 80
25% of 80 = 20
80 - 20 = 60
Total spent = 40

2. (B)
(70-30)/100 * 550 = 550 * 0.4 = 220
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