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Qn 248 One night a certain motel rented ┬╛ of

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Manager
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Joined: 28 Apr 2003
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Qn 248 One night a certain motel rented ┬╛ of [#permalink] New post 20 Jan 2004, 06:34
Qn 248

One night a certain motel rented ┬╛ of its rooms, including 2/3 of its air-conditioned rooms. If 3/5 of its room were air-conditioned, what percent of the rooms that were not rented were air-conditioned?

a. 20%
b. 33.3%
c. 35%
d. 40%
e. 80%

I was thinking the solution of 3/5 / ┬╝. but the answer is 80%. Can anyone try to solve it?
Director
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 [#permalink] New post 20 Jan 2004, 06:53
Plug. Say the motel has 80 rooms.


80 total 60 were rented 20 were not
80 total 48 have a/c 32 do not
48 a/c rooms 32 of a/c rooms rented 16 a/c rooms unrented
32 hot rooms 4 hot rooms unrented 28 hot rooms rented

16/(16+4)

80%
Senior Manager
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 [#permalink] New post 20 Jan 2004, 09:08
creating a grid as explained in Kaplan can also help.
  [#permalink] 20 Jan 2004, 09:08
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Qn 248 One night a certain motel rented ┬╛ of

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