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

It is currently 18 Jun 2019, 00:00

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Forty customers bought clothing from a certain store. If pants cost $7

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Manager
Manager
avatar
G
Joined: 07 Jun 2018
Posts: 52
Location: United States
Forty customers bought clothing from a certain store. If pants cost $7  [#permalink]

Show Tags

New post 25 Dec 2018, 14:17
2
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

77% (02:07) correct 23% (01:53) wrong based on 24 sessions

HideShow timer Statistics

Forty customers bought clothing from a certain store. If pants cost $78 each and skirt cost $62 each and the total revenue from these 40 customers was $2880, how many customers bought skirts? (Assume 1 customer bought 1 piece of clothing)
a. 25
b. 20
c. 15
d. 10
e. 5
Senior Manager
Senior Manager
User avatar
D
Status: Manager
Joined: 27 Oct 2018
Posts: 351
Location: Egypt
Concentration: Strategy, International Business
GPA: 3.67
WE: Pharmaceuticals (Health Care)
GMAT ToolKit User
Re: Forty customers bought clothing from a certain store. If pants cost $7  [#permalink]

Show Tags

New post 25 Dec 2018, 14:35
Jazzmin wrote:
Forty customers bought clothing from a certain store. If pants cost $78 each and skirt cost $62 each and the total revenue from these 40 customers was $2880, how many customers bought skirts? (Assume 1 customer bought 1 piece of clothing)
a. 25
b. 20
c. 15
d. 10
e. 5


let pants sold = p and skirts sold = s.

we can conclude 2 equations from the problem:
78p + 62s = 2880
39p + 31s = 1440 ---------- (1)

p + s = 40
31p + 31s = 1240 ---------- (2)

by subtracting the 2 equations: (1)-(2)
8p = 200, and p = 25
so s = 40 - 25 = 15

C.
_________________
Intern
Intern
avatar
B
Joined: 19 Jul 2017
Posts: 7
Forty customers bought clothing from a certain store. If pants cost $7  [#permalink]

Show Tags

New post 25 Dec 2018, 23:59
Mahmoudfawzy83 wrote:
Jazzmin wrote:
Forty customers bought clothing from a certain store. If pants cost $78 each and skirt cost $62 each and the total revenue from these 40 customers was $2880, how many customers bought skirts? (Assume 1 customer bought 1 piece of clothing)
a. 25
b. 20
c. 15
d. 10
e. 5


let pants sold = p and skirts sold = s.

we can conclude 2 equations from the problem:
78p + 62s = 2880
39p + 31s = 1440 ---------- (1)

p + s = 40
31p + 31s = 1240 ---------- (2)

by subtracting the 2 equations: (1)-(2)
8p = 200, and p = 25
so s = 40 - 25 = 15

C.
hey how did you get the 2nd equation.
e-GMAT Representative
User avatar
D
Joined: 04 Jan 2015
Posts: 2888
Re: Forty customers bought clothing from a certain store. If pants cost $7  [#permalink]

Show Tags

New post 26 Dec 2018, 10:31

Solution



Given:
    • Cost of a pant = $78
    • Cost of a skirt = $62
    • Total customers = 40
    • Each customer bought 1 piece of clothing
    • Total revenue generated = $2880

To find:
    • The number of customers who bought skirts

Approach and Working:
Let us assume that n customers bought skirts.
Hence, there should be (40 – n) customers who bought pants.

Therefore, we can write
    • 62 x n + 78 (40 – n) = 2880
    Or, 62n + 3120 – 78n = 2880
    Or, 16n = 240
    Or, n = 15

Hence, the correct answer is option C.

Answer: C

Image

_________________
GMAT Club Bot
Re: Forty customers bought clothing from a certain store. If pants cost $7   [#permalink] 26 Dec 2018, 10:31
Display posts from previous: Sort by

Forty customers bought clothing from a certain store. If pants cost $7

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne