Last visit was: 03 Dec 2024, 11:24 It is currently 03 Dec 2024, 11:24

Close

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

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 GRE 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
avatar
Manager
Manager
Joined: 28 Mar 2019
Status:Job holder
Posts: 108
Own Kudos [?]: 102 [1]
Given Kudos: 0
Location: Bangladesh
Mohammad Alamin Asif: Mohammad Alamin Asif
Send PM
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Own Kudos [?]: 12208 [0]
Given Kudos: 136
Send PM
User avatar
Senior Manager
Senior Manager
Joined: 10 Feb 2020
Posts: 496
Own Kudos [?]: 350 [0]
Given Kudos: 299
Send PM
avatar
Intern
Intern
Joined: 01 Oct 2020
Posts: 3
Own Kudos [?]: 4 [0]
Given Kudos: 0
Send PM
Re: A crockery store offered a sale of 15 % on their products. [#permalink]
1
For any increase or decrease for percents, a shortcut can be used where - if value is increased, simply multiply the original value by 1.X, where X = the percent value. For eg, 20% increase on $100 can be written as $100*1.2 = $120.

For decrease the value is 0.Y, where Y = 100-the percent value. For eg, 20% decrease on $100 would be $100*0.80 = $80

Therefore, for this question we can skip a few calculation steps by taking the original price as a. And hence,

After 10% discount = a*0.9
After 15% discount = a*0.9*0.85

Percent decrease =
(OLD - NEW)/OLD * 100 = (a - a*0.9*0.85)/a * 100= a(1 - 0.9*0.85)/a *100 = (a gets cancelled out, use calculator to get .9*.85 = 0.765) 0.235*100 = 23.5%, which is the answer D.
Prep Club for GRE Bot
Re: A crockery store offered a sale of 15 % on their products. [#permalink]
Moderators:
GRE Instructor
86 posts
GRE Forum Moderator
37 posts
Moderator
1111 posts
GRE Instructor
234 posts

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