It is currently 20 Oct 2019, 10:40

### 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

# 1/5 of all the cars on a certain auto lot are red, and

Author Message
TAGS:
Founder
Joined: 18 Apr 2015
Posts: 8484
Followers: 166

Kudos [?]: 1843 [0], given: 7861

1/5 of all the cars on a certain auto lot are red, and [#permalink]  11 Jul 2019, 02:05
Expert's post
00:00

Question Stats:

80% (00:41) correct 20% (02:05) wrong based on 5 sessions
$$\frac{1}{5}$$ of all the cars on a certain auto lot are red, and $$\frac{2}{3}$$ of all the red cars are convertibles. What fraction of all the cars are NOT red convertibles?

[Reveal] Spoiler: OA
$$\frac{13}{15}$$

_________________

Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos

Intern
Joined: 25 Jun 2019
Posts: 3
Followers: 0

Kudos [?]: 2 [0], given: 1

Re: 1/5 of all the cars on a certain auto lot are red, and [#permalink]  11 Jul 2019, 08:42
We know that 1/5 of all cars on a certain lot are red.
So, red cars, r = 1/5
and we know that 2/3 of red cars are red convertibles.
So, red convertibles, c = 2/3 (r) = 2/3 * 1/5 = 2/15. -> total red convertibles.
Then, a fraction of all the cars which are NOT red convertibles = 1 -2/15 = 13/15.
Re: 1/5 of all the cars on a certain auto lot are red, and   [#permalink] 11 Jul 2019, 08:42
Display posts from previous: Sort by