Forum Home > GMAT > Quantitative > Problem Solving (PS)
Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Dec 1310:00 AM EST
-12:00 PM EST
Have you ever wondered how to score a PERFECT 805 on the GMAT? Meet Julia, a banking professional who used the Target Test Prep course to achieve this incredible feat. Julia's story is nothing short of an inspiration.
Dec 1410:00 AM EST
-12:00 PM EST
Think a 100% GMAT Verbal score is out of your reach? Target Test Prep will make you think again! Our course uses techniques such as topical study and spaced repetition to maximize knowledge retention and make studying simple and fun.
Dec 1411:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test.- Dec 15
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Dec 1608:00 AM PST
-11:59 PM PST
GMAT Club 12 Days of Christmas is a 4th Annual GMAT Club Winter Competition based on solving questions. This is the Winter GMAT competition on GMAT Club with an amazing opportunity to win over $40,000 worth of prizes!
15 Jun 2017, 05:03
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
81% (02:18) correct
19%
(03:00)
wrong
based on 108
sessions
History
Date
Time
Result
Not Attempted Yet
Last year, the price of a jar of peanut butter at a certain store was P dollars and the price of a jar of jelly at the same store was J dollars, where J=2P. This year, the price of peanut butter increased by 20% and the price of jelly decreased by 20%. If a customer purchases one jar of peanut butter and one jar of jelly this year and receives a 25% discount, which of the following represents the amount that he paid, in terms of P?
A. 3P/2
B. 17P/10
C. 19P/10
D. 21P/10
E. 11P/5
A. 3P/2
B. 17P/10
C. 19P/10
D. 21P/10
E. 11P/5
sashiim20
Joined: 04 Dec 2015
Last visit: 05 Jun 2024
Posts: 620
Own Kudos:
Given Kudos: 276
Location: India
Concentration: Technology, Strategy
Schools: ISB '19 IIMB IIMA XLRI HEC Sept19 intake Rotman '21 NUS '21 NTU '20 Trinity MBA '20 Bocconi '21 Smurfit "21
WE:Information Technology (Consulting)
Schools: ISB '19 IIMB IIMA XLRI HEC Sept19 intake Rotman '21 NUS '21 NTU '20 Trinity MBA '20 Bocconi '21 Smurfit "21
Posts: 620
Kudos:
1,682
15 Jun 2017, 05:52
Kudos
Bookmarks
Bunuel
Last year, the price of a jar of peanut butter at a certain store was P dollars and the price of a jar of jelly at the same store was J dollars, where J=2P. This year, the price of peanut butter increased by 20% and the price of jelly decreased by 20%. If a customer purchases one jar of peanut butter and one jar of jelly this year and receives a 25% discount, which of the following represents the amount that he paid, in terms of P?
A. 3P/2
B. 17P/10
C. 19P/10
D. 21P/10
E. 11P/5
A. 3P/2
B. 17P/10
C. 19P/10
D. 21P/10
E. 11P/5
Peanut butter = $P
Price of Peanut butter increased by 20% = 120% of P = 120/100 * P = 6/5 * P
Jelly = $J ---- (Where J =2P)
Price of Jelly decreased by 20% = 80% of J = 80/100 * J = 4/5 *J = 4/5(2P) = 8/5*P
Price of one jar of Peanut butter and one jar of Jelly = 6/5*P + 8/5*P = (6P + 8P)/5 = 14P/5
Customer got 25% discount. ie; 75% of 14P/5 = 75/100 * 14P/5
3/4 * 14P/5 = (3*14/4*5)P = (42/20)P = (21/10) P or 21P/10. Answer D...
15 Jun 2017, 06:10
Kudos
Bookmarks
Let P=100, thus J=200, last year.
So this year P = 120 (20% increase), and J = 160 (20% decrease). Price paid this year by customer = 120+160 = 280.
But after 25% discount, price = 75% of 280 = 3/4 * 280 = 210.
So we have to look for an option where if we put P=100, we should get answer as '210'.
That is only option D. Hence D answer
So this year P = 120 (20% increase), and J = 160 (20% decrease). Price paid this year by customer = 120+160 = 280.
But after 25% discount, price = 75% of 280 = 3/4 * 280 = 210.
So we have to look for an option where if we put P=100, we should get answer as '210'.
That is only option D. Hence D answer
