GRE Prep 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.
Jack and Jill each bought the same TV set using a 10% off co
[#permalink]
26 Apr 2017, 02:26
26 Apr 2017, 02:26
1
Expert Reply
2
Bookmarks
00:00
Question Stats:
65% (01:14) correct
34% (01:17) wrong based on 249 sessions
Hide Show timer Statistics
Jack and Jill each bought the same TV set using a 10% off coupon. Jack's cashier took 10% off the price and then added 8.5% sales tax. Jill's cashier first added the tax and then took 10% off the total price.
Quantity A |
Quantity B |
The amount Jack paid |
The amount The amount Jill paid |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: Jack and Jill each bought the same TV set using a 10% off co
[#permalink]
18 May 2017, 13:13
18 May 2017, 13:13
1
3
Bookmarks
Carcass wrote:
Jack and Jill each bought the same TV set using a 10% off coupon. Jack's cashier took 10% off the price and then added 8.5% sales tax. Jill's cashier first added the tax and then took 10% off the total price.
Quantity A |
Quantity B |
The amount Jack paid |
The amount The amount Jill paid |
Let's say the TV costs x dollars BEFORE the discount.
Jack's cashier took 10% off the price and then added 8.5% sales tax
Jack's cashier took 10% off the price... so, the discounted price = (0.9)x
....and then added 8.5% sales tax. Adding 8.5% tax is the same as multiplying by 1.085
So., Jack's final cost = (0.9)(x)(1.085)
Jill's cashier first added the tax and then took 10% off the total price.
Jill's cashier first added the tax... adding 8.5% tax is the same as multiplying by 1.085
So, the new cost is (1.085)(x)
....and then took 10% off the total price.
So, Jill's final cost = (0.9)(1.085)(x)
We get:
Quantity A: (0.9)(x)(1.085)
Quantity B: (0.9)(1.085)(x)
Answer:
Show: ::
C
Re: Jack and Jill each bought the same TV set using a 10% off co
[#permalink]
26 Jan 2019, 13:15
26 Jan 2019, 13:15
Very Tricky, at first glance i forgot the tax was in %
