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During a certain season, a team won 80 percent of its first

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During a certain season, a team won 80 percent of its first [#permalink] New post 20 Dec 2012, 07:20
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Question Stats:

87% (02:40) correct 13% (01:49) wrong based on 144 sessions
During a certain season, a team won 80 percent of its first 100 games and 50 percent of its remaining games. If the team won 70 percent of its games for the entire season, what was the total number of games that the team played?

(A) 180
(B) 170
(C) 156
(D) 150
(E) 105
[Reveal] Spoiler: OA
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Re: During a certain season, a team won 80 percent of its first [#permalink] New post 20 Dec 2012, 07:21
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Walkabout wrote:
During a certain season, a team won 80 percent of its first 100 games and 50 percent of its remaining games. If the team won 70 percent of its games for the entire season, what was the total number of games that the team played?

(A) 180
(B) 170
(C) 156
(D) 150
(E) 105


This is simple weighted average question.

Let the # of the remaining games be x then 0.8*100+0.5*x=0.7*(100+x) --> x=50 --> total # of games thus equal to 100+x=100+50=150.

Answer: D.

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Re: During a certain season, a team won 80 percent of its first   [#permalink] 20 Dec 2012, 07:21
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