What is the value of (2t + t - x)/(t - x)?

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What is the value of (2t + t - x)/(t - x)? [#permalink]

05 Feb 2013, 05:38

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What is the value of (2t + t - x)/(t - x)?

(1) 2t/(t - x) = 3

(2) t - x = 5

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Re: What is the value of (2t + t - x)/(t - x)? [#permalink]

05 Feb 2013, 05:41

What is the value of (2t + t - x)/(t - x)?

\frac{2t + t - x}{t - x}=\frac{2t}{t - x}+\frac{t - x}{t - x}=\frac{2t}{t - x}+1=?

(1) 2t/(t - x) = 3 --> \frac{2t}{t - x}+1=3+1=4. Sufficient.

(2) t - x = 5 --> \frac{2t + (t - x)}{(t - x)}=\frac{2t + 5}{5} --> different values of t will give different values ofr this expression. Not sufficient.

Answer: A.
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Re: What is the value of (2t + t - x)/(t - x)? [#permalink]

07 Feb 2013, 16:13

Walkabout wrote:

What is the value of (2t + t - x)/(t - x)?

(1) 2t/(t - x) = 3

(2) t - x = 5

2t/(t-x) + t/(t-x) - x(t-x) = ??

from 1

3/2= t/(t-x) , and x = t-2/3t , thus suff

from 2

t-x = 5 obviously not suff

i d say A

Re: What is the value of (2t + t - x)/(t - x)? [#permalink] 07 Feb 2013, 16:13

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What is the value of (2t + t - x)/(t - x)?

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What is the value of (2t + t - x)/(t - x)?

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