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A certain city owns 298 buses, whose routes are divided into [#permalink]
21 Jun 2011, 06:03

00:00

A

B

C

D

E

Difficulty:

75% (hard)

Question Stats:

14% (02:05) correct
86% (00:50) wrong based on 21 sessions

A certain city owns 298 buses, whose routes are divided into three zones. At a given time, if q buses are in the blue zone, r buses are in the red zone, s buses are in the green zone, and t buses are in garages, how many buses are in the green zone?

(1) The ratio of q to r to s is 4:6:7 and 26 buses are in garages.

My answer is A but looks like the answer choice is E. Can you please explain. The first question does provide the ratio and the total of the buses in the garage with which we can solve the equation.

A certain city owns 298 buses, whose routes are divided into three zones. At a given time, if q buses are in the blue zone, r buses are in the red zone, s buses are in the green zone, and t buses are in garages, how many buses are in the green zone?

(1) The ratio of q to r to s is 4:6:7 and 26 buses are in garages.

(2) q = 64

1) This is clearly no A because we did not have proportion of the bases in guarage to other. Insuff 2) q=64 / we have no relationtion with other type

1) + 2) Give as q/s=4/7, from here 64/s=4/7. s = 64*7/4=16*7=112

Could you please help me to understand this a little better?

Form statement A, I am not finding the second possibility suggested by subhash

There are 26 busses in the garage, so at the time of division, there are only 298-26 bussed available to be divided among the 3 regions

so x= 16. With that we can arrive at the solution? whats the catch here?

Answer should be "A" unless Kaplan goes like: hehe.. tricked ya!!! I didn't tell you that buses can also be in the depots and bus stations; in which case, it should be "E". _________________

Re: A certain city owns 298 buses, whose routes are divided into [#permalink]
15 Nov 2011, 14:48

A for me as well. Any trick involved? _________________

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gmatclubot

Re: A certain city owns 298 buses, whose routes are divided into
[#permalink]
15 Nov 2011, 14:48

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