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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
What number is yielded when 800 is increased by 50% and then decreased
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25 Feb 2021, 06:15
25 Feb 2021, 06:15
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What number is yielded when 800 is increased by 50% and then decreased by 30%?
A. 840
B. 820
C. 800
D. 780
E. 760
A. 840
B. 820
C. 800
D. 780
E. 760
Re: What number is yielded when 800 is increased by 50% and then decreased
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25 Feb 2021, 06:53
25 Feb 2021, 06:53
1
This is too easy to be a GRE question. Anyways, try to practice some mental math:
Increase by 50% --> add half the original number = 800 + 400 = 1200
Then decrease by 30% --> First, get 10% of 1200, which is 120, then multiply by 3 to get 30%. This is equal 360. Then 1200-360 = 840.
The answer is A.
Posted from my mobile device
Increase by 50% --> add half the original number = 800 + 400 = 1200
Then decrease by 30% --> First, get 10% of 1200, which is 120, then multiply by 3 to get 30%. This is equal 360. Then 1200-360 = 840.
The answer is A.
Posted from my mobile device
gmatclubot
Re: What number is yielded when 800 is increased by 50% and then decreased [#permalink]
25 Feb 2021, 06:53
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