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# What is 35% of a number if 12 is 15% of a number?

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Math Expert
Joined: 02 Sep 2009
Posts: 57279
What is 35% of a number if 12 is 15% of a number?  [#permalink]

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08 Aug 2019, 01:41
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Difficulty:

15% (low)

Question Stats:

94% (00:50) correct 6% (02:14) wrong based on 16 sessions

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What is 35% of a number if 12 is 15% of a number?

A. 5
B. 12
C. 28
D. 33
E. 62

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Joined: 03 Jun 2019
Posts: 1080
Location: India
Re: What is 35% of a number if 12 is 15% of a number?  [#permalink]

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08 Aug 2019, 05:07
Bunuel wrote:
What is 35% of a number if 12 is 15% of a number?

A. 5
B. 12
C. 28
D. 33
E. 62

What is 35% of a number if 12 is 15% of a number?

15%x = 12
25%x = 12/15%*35% = 12 * 7/3 = 4*7 = 28

IMO C
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Re: What is 35% of a number if 12 is 15% of a number?  [#permalink]

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08 Aug 2019, 05:24
Bunuel wrote:
What is 35% of a number if 12 is 15% of a number?

A. 5
B. 12
C. 28
D. 33
E. 62

Here 12 = $$\frac{15}{100}$$*x
x = $$\frac{12}{15}$$*100

Now, we have to find 35% of x
hence $$\frac{35}{100}$$*x = $$\frac{35}{100}$$*$$\frac{12}{15}$$*100

35% of x = 28

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Re: What is 35% of a number if 12 is 15% of a number?  [#permalink]

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11 Aug 2019, 19:37
Bunuel wrote:
What is 35% of a number if 12 is 15% of a number?

A. 5
B. 12
C. 28
D. 33
E. 62

Letting n = the number, we have:

12 = 0.15n

80 = n

So 35% of the number is 0.35 x 80 = 28.

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Re: What is 35% of a number if 12 is 15% of a number?   [#permalink] 11 Aug 2019, 19:37
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