If y is decreased by 20% and then increased by 60%, what is : GMAT Problem Solving (PS)
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# If y is decreased by 20% and then increased by 60%, what is

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Current Student
Joined: 06 Sep 2013
Posts: 2035
Concentration: Finance
GMAT 1: 770 Q0 V
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Kudos [?]: 594 [0], given: 355

If y is decreased by 20% and then increased by 60%, what is [#permalink]

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20 Sep 2013, 16:18
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If y is decreased by 20% and then increased by 60%, what is the new number, expressed in terms of y?

OA is
[Reveal] Spoiler:
1.28
Math Expert
Joined: 02 Sep 2009
Posts: 36618
Followers: 7099

Kudos [?]: 93540 [0], given: 10578

Re: If y is decreased by 20% and then increased by 60%, what is [#permalink]

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20 Sep 2013, 16:29
jlgdr wrote:
If y is decreased by 20% and then increased by 60%, what is the new number, expressed in terms of y?

OA is
[Reveal] Spoiler:
1.28

x = y*0.8*1.6 = 1.28y.
_________________
Re: If y is decreased by 20% and then increased by 60%, what is   [#permalink] 20 Sep 2013, 16:29
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