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24 Apr 2017, 04:33
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A basketball coach has won 65 percent of the 400 games she has coached in her career. If she will coach 100 more games before retirement, how many must she win to raise her winning percentage to 70 percent?
A. 50
B. 65
C. 75
D. 90
E. 100
A. 50
B. 65
C. 75
D. 90
E. 100
24 Apr 2017, 05:58
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65% of 400 is 260.
If she has to increase her number of wins to 70% after 100 more matches,
she would have to achieve 350/500.
Since she has 260 wins already, she needs to win 90 of the remaining matches.(Option D)
If she has to increase her number of wins to 70% after 100 more matches,
she would have to achieve 350/500.
Since she has 260 wins already, she needs to win 90 of the remaining matches.(Option D)
24 Apr 2017, 06:00
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A basketball coach has won 65 percent of the 400 games she has coached in her career. If she will coach 100 more games before retirement, how many must she win to raise her winning percentage to 70 percent?
65% of 400 = 260
70% of 500 = 350
More games to be won = 350-260 = 90
Hence, answer will be D.
65% of 400 = 260
70% of 500 = 350
More games to be won = 350-260 = 90
Hence, answer will be D.
