It is currently 13 Dec 2018, 16:56

### 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

# At the rate of 6,000 revolutions per minute, how many revolu

Author Message
TAGS:
Moderator
Joined: 18 Apr 2015
Posts: 5166
Followers: 77

Kudos [?]: 1033 [0], given: 4655

At the rate of 6,000 revolutions per minute, how many revolu [#permalink]  22 Feb 2018, 07:26
Expert's post
00:00

Question Stats:

50% (00:20) correct 50% (00:03) wrong based on 4 sessions
At the rate of 6,000 revolutions per minute, how many revolutions will a wheel make in x seconds?

A. $$6,000x$$

B. $$100x$$

C. $$\frac{100}{x}$$

D. $$\frac{6,000}{x}$$

E. $$\frac{360,000}{x}$$
[Reveal] Spoiler: OA

_________________
Manager
Joined: 15 Jan 2018
Posts: 147
GMAT 1: Q V
Followers: 3

Kudos [?]: 174 [1] , given: 0

Re: At the rate of 6,000 revolutions per minute, how many revolu [#permalink]  22 Feb 2018, 23:31
1
KUDOS
Any time you have to do a unit conversion, you will be either multiplying or dividing. One way to talk yourself through a unit conversion like this is to tell yourself "if it can do 6000 revolutions per minute, it must be able to do fewer revolutions in a second." That means you have to divide by 60, since there are 60 seconds in a minute. So since 6000/60 = 100, it can do 100 revolutions in one second. If it has x seconds, it must be able to do 100x revolutions in x seconds, so the answer is B.
_________________

-
-
-
-
-

Need help with GRE math? Check out our ground-breaking books and app.

Re: At the rate of 6,000 revolutions per minute, how many revolu   [#permalink] 22 Feb 2018, 23:31
Display posts from previous: Sort by