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What is 0.01 percent of 12,356?

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by Max@Math Revolution » Mon May 02, 2016 4:15 am
What is 0.01 percent of 12,356?

A. 0.12356
B. 1.2356
C. 12.356
D. 0.012356
E. 0.0012356


* A solution will be posted in two days.
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by Brent@GMATPrepNow » Mon May 02, 2016 6:33 am
Max@Math Revolution wrote:What is 0.01 percent of 12,356?

A. 0.12356
B. 1.2356
C. 12.356
D. 0.012356
E. 0.0012356
Let's work our way down to 0.01%

10% of 12356 = 1235.6
1% of 12356 = 123.56
0.1% of 12356 = 12.356
0.01% of 12356 = 1.2356

Answer: B

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by OptimusPrep » Mon May 02, 2016 7:14 pm
Max@Math Revolution wrote:What is 0.01 percent of 12,356?

A. 0.12356
B. 1.2356
C. 12.356
D. 0.012356
E. 0.0012356


* A solution will be posted in two days.
0.01% = 0.01/100 = 1/(100*100)

0.01% of 12,356 = 1.2536

Correct Option: B
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by diegocml » Wed May 04, 2016 3:44 am
Brent@GMATPrepNow wrote:
Max@Math Revolution wrote:What is 0.01 percent of 12,356?

A. 0.12356
B. 1.2356
C. 12.356
D. 0.012356
E. 0.0012356
Let's work our way down to 0.01%

10% of 12356 = 1235.6
1% of 12356 = 123.56
0.1% of 12356 = 12.356
0.01% of 12356 = 1.2356

Answer: B

Cheers,
Brent
Hey Brent, so

10% of a number: Move the decimal point one place to the left
1% of a number: Move the decimal point two places to the left
0.1% of a number: Move the decimal point three places to the left
0.01% of a number: Move the decimal point four places to the left
Diego

1st GMAT attemp: 410 (Q18 V27)
2nd GMAT attemp: 490 (Q35 V23)
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by Brent@GMATPrepNow » Wed May 04, 2016 4:20 am
diegocml wrote:
Brent@GMATPrepNow wrote:
Max@Math Revolution wrote:What is 0.01 percent of 12,356?

A. 0.12356
B. 1.2356
C. 12.356
D. 0.012356
E. 0.0012356
Let's work our way down to 0.01%

10% of 12356 = 1235.6
1% of 12356 = 123.56
0.1% of 12356 = 12.356
0.01% of 12356 = 1.2356

Answer: B

Cheers,
Brent
Hey Brent, so

10% of a number: Move the decimal point one place to the left
1% of a number: Move the decimal point two places to the left
0.1% of a number: Move the decimal point three places to the left
0.01% of a number: Move the decimal point four places to the left
Exactly.
Once you know that, you can calculate most percentages in your head. Here's a video on how to do that:
- Finding x Percent of y: https://www.gmatprepnow.com/module/gmat ... video/1076

Cheers,
Brent
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by Max@Math Revolution » Wed May 04, 2016 6:48 am
Since, Percent=1/100, what=something(s), and is:=. We can write the question as s=0.01(1/100)12,356. The answer is 1.2356. Hence, the correct answer is B.

- Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
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by Brent@GMATPrepNow » Fri Jan 12, 2018 7:18 am
Max@Math Revolution wrote:What is 0.01 percent of 12,356?

A. 0.12356
B. 1.2356
C. 12.356
D. 0.012356
E. 0.0012356
Let's work our way down to 0.01%

10% of 12356 = 1235.6
1% of 12356 = 123.56
0.1% of 12356 = 12.356
0.01% of 12356 = 1.2356

Answer: B

Cheers,
Brent
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