GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 14 Dec 2018, 18:21

### 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

## Events & Promotions

###### Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
• ### Typical Day of a UCLA MBA Student - Recording of Webinar with UCLA Adcom and Student

December 14, 2018

December 14, 2018

10:00 PM PST

11:00 PM PST

Carolyn and Brett - nicely explained what is the typical day of a UCLA student. I am posting below recording of the webinar for those who could't attend this session.
• ### Free GMAT Strategy Webinar

December 15, 2018

December 15, 2018

07:00 AM PST

09:00 AM PST

Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

# Chetan purchased LED lamps of only two possible variants-Algebra-DS

Author Message
Director
Joined: 08 Jun 2013
Posts: 515
Location: India
GMAT 1: 200 Q1 V1
GPA: 3.82
WE: Engineering (Other)
Chetan purchased LED lamps of only two possible variants-Algebra-DS  [#permalink]

### Show Tags

11 Aug 2018, 08:37
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:49) correct 0% (00:00) wrong based on 4 sessions

### HideShow timer Statistics

Chetan purchased LED lamps of only two possible variants: \$5 lamp and \$25 lamp. If the ratio between the number of \$5 lamps purchased and the number of \$25 lamps purchased is 13:7, How many \$5 lamps did chetan buy?

(1) The total purchase price of the LED lamps Chetan bought was less than \$400 .

(2) The total purchase price of the LED lamps Chetan bought was greater than \$200.

_________________

It seems Kudos button not working correctly with all my posts...

Please check if it is working with this post......

is it?....

Anyways...Thanks for trying

Math Expert
Joined: 02 Aug 2009
Posts: 7106
Re: Chetan purchased LED lamps of only two possible variants-Algebra-DS  [#permalink]

### Show Tags

11 Aug 2018, 08:56
Harshgmat wrote:
Chetan purchased LED lamps of only two possible variants: \$5 lamp and \$25 lamp. If the ratio between the number of \$5 lamps purchased and the number of \$25 lamps purchased is 13:7, How many \$5 lamps did chetan buy?

(1) The total purchase price of the LED lamps Chetan bought was less than \$400 .

(2) The total purchase price of the LED lamps Chetan bought was greater than \$200.

Let the number be 13x and 7x, so 13*5x+7*25x is the price..

1) 65x+175x<400
So 240x<400.... So x<5/3, thus X can be just 1
And hence the number of 5\$ lamps is 13x=13*1=13
Sufficient

2) 65x+175x>200
So 240x>200...X>5/6
X could be anything 1 to anything above
So insufficient

A
_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html

GMAT online Tutor

Math Expert
Joined: 02 Sep 2009
Posts: 51215
Re: Chetan purchased LED lamps of only two possible variants-Algebra-DS  [#permalink]

### Show Tags

11 Aug 2018, 12:20
Harshgmat wrote:
Chetan purchased LED lamps of only two possible variants: \$5 lamp and \$25 lamp. If the ratio between the number of \$5 lamps purchased and the number of \$25 lamps purchased is 13:7, How many \$5 lamps did chetan buy?

(1) The total purchase price of the LED lamps Chetan bought was less than \$400 .

(2) The total purchase price of the LED lamps Chetan bought was greater than \$200.

Discussed here: https://gmatclub.com/forum/danny-purcha ... 44419.html
_________________
Re: Chetan purchased LED lamps of only two possible variants-Algebra-DS &nbs [#permalink] 11 Aug 2018, 12:20
Display posts from previous: Sort by