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# In City Y last year, what was the ratio of the number of

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Intern
Joined: 05 Nov 2005
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In City Y last year, what was the ratio of the number of [#permalink]

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20 Nov 2005, 15:10
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In City Y last year, what was the ratio of the number of commuters who rode buses to the number of commuters who rode trains?

1. In City Y last year, 50,000 commuters rode trains and 48,000 commuters rode buses.
2. In City Y last year, if the number of commuters who rode trains had been 20 percent greater, the number of commuters who rode trains would have been 125percent of the number of commuters who rode buses.

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VP
Joined: 06 Jun 2004
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20 Nov 2005, 15:28

(1) Ratio = 48,000/50,000 = 24/25

(2) Let T = Number of commuters who rode trains
Let B = Number of commuters who rode buses

1.20T = 1.25B, after simplyfying, we can find the ratio is 24/25 as well

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Director
Joined: 27 Jun 2005
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21 Nov 2005, 13:06
D

In City Y last year, what was the ratio of the number of commuters who rode buses to the number of commuters who rode trains?

1. In City Y last year, 50,000 commuters rode trains and 48,000 commuters rode buses.
B/T=48,000 /50000

Suff

2. In City Y last year, if the number of commuters who rode trains had been 20 percent greater, the number of commuters who rode trains would have been 125percent of the number of commuters who rode buses.

T*120/100=B*125/100

suff

hence D

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Current Student
Joined: 29 Jan 2005
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23 Nov 2005, 05:15
TeHCM wrote:

(1) Ratio = 48,000/50,000 = 24/25

(2) Let T = Number of commuters who rode trains
Let B = Number of commuters who rode buses

1.20T = 1.25B, after simplyfying, we can find the ratio is 24/25 as well

Perfectly explained and easy to follow. Concur with TeHCM: (D)

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Re: DS-Ratio   [#permalink] 23 Nov 2005, 05:15
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