What is 0.01 percent of 12,356?

This topic has expert replies
User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 am
Location: Las Vegas, USA
Thanked: 19 times
Followed by:37 members

What is 0.01 percent of 12,356?

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.

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pm
Location: Vancouver, BC
Thanked: 5254 times
Followed by:1268 members
GMAT Score:770

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

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image

User avatar
Master | Next Rank: 500 Posts
Posts: 410
Joined: Fri Mar 13, 2015 3:36 am
Location: Worldwide
Thanked: 120 times
Followed by:8 members
GMAT Score:770

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

Senior | Next Rank: 100 Posts
Posts: 67
Joined: Tue Mar 15, 2016 10:35 am
Thanked: 7 times
GMAT Score:410

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)

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pm
Location: Vancouver, BC
Thanked: 5254 times
Followed by:1268 members
GMAT Score:770

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
Brent Hanneson - Creator of GMATPrepNow.com
Image

User avatar
Elite Legendary Member
Posts: 3991
Joined: Fri Jul 24, 2015 2:28 am
Location: Las Vegas, USA
Thanked: 19 times
Followed by:37 members

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.

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pm
Location: Vancouver, BC
Thanked: 5254 times
Followed by:1268 members
GMAT Score:770

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
Brent Hanneson - Creator of GMATPrepNow.com
Image