It is currently 15 Feb 2019, 17:38

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Which of the following is equal

Author Message
TAGS:
Moderator
Joined: 18 Apr 2015
Posts: 5516
Followers: 89

Kudos [?]: 1113 [0], given: 5129

Which of the following is equal [#permalink]  18 Mar 2018, 09:40
Expert's post
00:00

Question Stats:

58% (00:38) correct 41% (00:33) wrong based on 24 sessions
Which of the following is equal to $$\frac{1}{4}$$ of $$0.01$$ percent?

(A) 0.000025
(B) 0.00025
(C) 0.0025
(D) 0.025
(E) 0.25
[Reveal] Spoiler: OA

_________________
Director
Joined: 07 Jan 2018
Posts: 597
Followers: 7

Kudos [?]: 525 [1] , given: 88

Re: Which of the following is equal [#permalink]  23 Mar 2018, 08:11
1
KUDOS
$$\frac{1}{4}=0.25$$
$$0.01$$ percent = $$\frac{0.01}{100} = 0.0001$$
Hence we are asked to find $$0.25 * 0.0001$$
$$25 *1 = 25$$ now to add the number of zeros after decimal and before 25 count the number of zeros in the two numbers that were multiplied.
i.e $$2$$for $$0.25$$and $$4$$ for $$0.0001$$ so altogether $$6$$
two places has already been filled by 25 hence we need four zeros after decimal
$$0.000025$$
option A
_________________

This is my response to the question and may be incorrect. Feel free to rectify any mistakes

GRE Instructor
Joined: 10 Apr 2015
Posts: 1407
Followers: 53

Kudos [?]: 1334 [2] , given: 8

Re: Which of the following is equal [#permalink]  03 May 2018, 09:52
2
KUDOS
Expert's post
Carcass wrote:
Which of the following is equal to $$\frac{1}{4}$$ of $$0.01$$ percent?

(A) 0.000025
(B) 0.00025
(C) 0.0025
(D) 0.025
(E) 0.25

10% = 0.1
1% = 0.01
0.1% = 0.001
0.01% = 0.0001

So, 1/4 of 0.01% = 1/4 of 0.0001
= (0.25)(0.0001)
= 0.000025

Cheers,
Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com

GRE Instructor
Joined: 10 Apr 2015
Posts: 1407
Followers: 53

Kudos [?]: 1334 [1] , given: 8

Re: Which of the following is equal [#permalink]  03 May 2018, 09:57
1
KUDOS
Expert's post
Carcass wrote:
Which of the following is equal to $$\frac{1}{4}$$ of $$0.01$$ percent?

(A) 0.000025
(B) 0.00025
(C) 0.0025
(D) 0.025
(E) 0.25

A different approach.

Notice that 1/4 of 0.01% = 0.01% of 1/4 = 0.01% of 0.25

Now look for a pattern....

100% of 0.25 = 0.25
10% of 0.25 = 0.025
1% of 0.25 = 0.0025
0.1% of 0.25 = 0.00025
0.01% of 0.25 = 0.000025

Cheers,
Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com

Re: Which of the following is equal   [#permalink] 03 May 2018, 09:57
Display posts from previous: Sort by