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# GMAT Official Practice test #3 - Quant problem #1

Author Message
Intern
Joined: 24 Dec 2018
Posts: 1
GMAT Official Practice test #3 - Quant problem #1  [#permalink]

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25 Dec 2018, 11:23
00:00

Difficulty:

25% (medium)

Question Stats:

100% (01:36) correct 0% (00:00) wrong based on 7 sessions

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If (5^x)-(5^(x-3))=(124)(5^y). what is y in terms of x?

A. x
B. x-6
C. x-3
D. 2x+3
E. 2x + 6

Correct answer is C. I'm getting thrown off by the 124 since I'm trying to convert everything into common bases (i.e. 5).
Math Expert
Joined: 02 Sep 2009
Posts: 58434
Re: GMAT Official Practice test #3 - Quant problem #1  [#permalink]

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25 Dec 2018, 11:25
1
accountingnerd1 wrote:
If (5^x)-(5^(x-3))=(124)(5^y). what is y in terms of x?

A. x
B. x-6
C. x-3
D. 2x+3
E. 2x + 6

Correct answer is C. I'm getting thrown off by the 124 since I'm trying to convert everything into common bases (i.e. 5).

Discussed here: https://gmatclub.com/forum/if-5-x-5-x-3 ... 09080.html Hope it helps.

Please follow our rules when posting a question: https://gmatclub.com/forum/rules-for-po ... 33935.html Thank you.
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Re: GMAT Official Practice test #3 - Quant problem #1   [#permalink] 25 Dec 2018, 11:25
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