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If X decreases 40%, by what percent must it increase to retu
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02 Oct 2017, 22:28
02 Oct 2017, 22:28
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Question Stats:
80% (00:31) correct
20% (00:19) wrong based on 10 sessions
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If X decreases 40%, by what percent must it increase to return to its original value?
(A) 40
(B) 50
(C) 66 2/3%
(D) 75%
(E) 80%
Kudos for correct solution.
(A) 40
(B) 50
(C) 66 2/3%
(D) 75%
(E) 80%
Kudos for correct solution.
Re: If X decreases 40%, by what percent must it increase to retu
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03 Oct 2017, 04:32
03 Oct 2017, 04:32
1
If we reduce X by 40% we get (1-0.4)*X = 0.6X. If we want to get X back, we can write an equation \(0.6x*p = x\), where p is the percent increase. Then p = 1.6667.
The increase is then 66.667 or 66 2/3%.
Answer C
The increase is then 66.667 or 66 2/3%.
Answer C
gmatclubot
Re: If X decreases 40%, by what percent must it increase to retu [#permalink]
03 Oct 2017, 04:32
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