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# Two is 10% of x and 20% of y. What is x - y?

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Math Expert
Joined: 02 Sep 2009
Posts: 59588
Two is 10% of x and 20% of y. What is x - y?  [#permalink]

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22 Mar 2019, 00:43
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Difficulty:

5% (low)

Question Stats:

96% (00:48) correct 4% (03:27) wrong based on 26 sessions

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Two is 10% of x and 20% of y. What is x - y?

(A) 1
(B) 2
(C) 5
(D) 10
(E) 20

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Joined: 18 Aug 2017
Posts: 5436
Location: India
Concentration: Sustainability, Marketing
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Re: Two is 10% of x and 20% of y. What is x - y?  [#permalink]

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22 Mar 2019, 03:54
Bunuel wrote:
Two is 10% of x and 20% of y. What is x - y?

(A) 1
(B) 2
(C) 5
(D) 10
(E) 20

2= 10/100 * x
x= 20
and
2=20/100 * y
y= 10
so x-y = 10
IMO D
Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8622
Location: United States (CA)
Re: Two is 10% of x and 20% of y. What is x - y?  [#permalink]

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24 Mar 2019, 18:30
Bunuel wrote:
Two is 10% of x and 20% of y. What is x - y?

(A) 1
(B) 2
(C) 5
(D) 10
(E) 20

2 = 0.1x

x = 2/0.1 = 20

And

2 = 0.2y

y = 2/0.2 = 10

Thus, x - y = 20 - 10 = 10.

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Re: Two is 10% of x and 20% of y. What is x - y?   [#permalink] 24 Mar 2019, 18:30
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# Two is 10% of x and 20% of y. What is x - y?

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