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Math Expert V
Joined: 02 Sep 2009
Posts: 64236
What is 35% of a number if 12 is 15% of a number?  [#permalink]

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Difficulty:   5% (low)

Question Stats: 97% (00:59) correct 3% (02:14) wrong based on 31 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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CEO  V
Joined: 03 Jun 2019
Posts: 2931
Location: India
GMAT 1: 690 Q50 V34 WE: Engineering (Transportation)
Re: What is 35% of a number if 12 is 15% of a number?  [#permalink]

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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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Kinshook Chaturvedi
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Joined: 07 Mar 2019
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GMAT 1: 580 Q43 V27
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Re: What is 35% of a number if 12 is 15% of a number?  [#permalink]

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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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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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Joined: 18 Dec 2017
Posts: 1377
Location: United States (KS)
GMAT 1: 600 Q46 V27 Re: What is 35% of a number if 12 is 15% of a number?  [#permalink]

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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

12 is 15% of a number. Which means 4 is 5%. Which means 100% will be 80. So the number is 80

35% of 80 is 24+4=28
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You are missing on great learning if you don't know what this is: Project SC Butler Re: What is 35% of a number if 12 is 15% of a number?   [#permalink] 15 Oct 2019, 11:31

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