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After winning 50 percent of the first 20 games it played,

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After winning 50 percent of the first 20 games it played, [#permalink] New post 22 Jul 2007, 15:58
After winning 50 percent of the first 20 games it played, Team A won all of the remaining games it played. What was the total number fo games that Team A won?

1) Team A played 25 games altogether.

2) Team A won 60 percent of all the games it played.

Data Suff.

I cannot figure out the answer, please help.
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 [#permalink] New post 22 Jul 2007, 16:38
Both are sufficient.

From 1. We can find that they won 15 games.

For 2. I just plugged in numbers... 11/21... 12/22... 13/23...14/24...15/25 and bingo... thats 60%.

:)
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 [#permalink] New post 22 Jul 2007, 23:16
St1:
Team A won it's last 5 remaining games. It also won the 10 out of the first 20 games. So Total number of games won = 15. Sufficient.

St2:
If team A played x games, then 0.6x = 10 + (x-20). Solve for x and you can find out how many games Team A won. Sufficient.

Ans D
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 [#permalink] New post 24 Jul 2007, 18:30
Ans is D, very good thank you.
  [#permalink] 24 Jul 2007, 18:30
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