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Re: A rental car agency owns a total of 5x cars and 2x trucks, where x is [#permalink]
Bunuel wrote:
A rental car agency owns a total of 5x cars and 2x trucks, where x is a positive integer. If the agency purchases c new cars, will the new ratio of cars to trucks be at least 3 to 1 ?

(1) c = x + 5
(2) x = 11


Original ratio of Cars : Trucks = 5x : 2x. That means the company already have 2.5 times cars to trucks. If c is equal or more than 50% of 2x, i.e if c is more than x than the ratio of Cars to trucks will be at least 3 to 1.

1) c is 5 more than x. Sufficient.

2) It only tells us there were 55 cars and 22 trucks before adding the new cars. Not sufficient.

A is the answer.
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Re: A rental car agency owns a total of 5x cars and 2x trucks, where x is [#permalink]
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Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: A rental car agency owns a total of 5x cars and 2x trucks, where x is [#permalink]
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