percentage

BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

This topic has expert replies

Post new topic Post Reply

Previous Topic Next Topic

ddm: Master | Next Rank: 500 Posts; Posts: 162; Joined: Mon Jul 28, 2008 8:33 pm; Location: San Jose,CA; Thanked: 1 times

percentage

by ddm » Mon Aug 25, 2008 3:11 pm

Cindy has her eye on a sundress but thinks it is too expensive. It goes on sale for 15% less than the original price. Before Cindy can buy the dress, however, the store raises the new price by 25%. If the dress cost $68 after it went on sale for 15% off, what is the difference between the original price and the final price?

$0.00
$1.00
$3.40
$5.00
$6.80

Quote

Source: Beat The GMAT — Problem Solving | Mon Aug 25, 2008 3:11 pm

just_do_it: Senior | Next Rank: 100 Posts; Posts: 73; Joined: Thu Aug 07, 2008 7:33 pm; Thanked: 7 times; Followed by:1 members

by just_do_it » Mon Aug 25, 2008 4:01 pm

if x is the original price,

price after 15% discount = (x-0.15x)=68
solving for x, we get x=80

after 25% increase on the discounted price,
new price = 68+68*25/100 = 85

therefore difference in original and new price =$5
(option d)

what is the OA?

Quote

Sunny22uk: Master | Next Rank: 500 Posts; Posts: 144; Joined: Thu Apr 17, 2008 3:33 pm; Thanked: 8 times

Re: percentage

by Sunny22uk » Mon Aug 25, 2008 4:03 pm

ddm wrote:Cindy has her eye on a sundress but thinks it is too expensive. It goes on sale for 15% less than the original price. Before Cindy can buy the dress, however, the store raises the new price by 25%. If the dress cost $68 after it went on sale for 15% off, what is the difference between the original price and the final price?

$0.00
$1.00
$3.40
$5.00
$6.80

lets say x is the orignal price
>>dress costs 68$ after sale(15% off) that means 85% of x=68
>>orignal price=x=80
>>final price=68+25% of 68 i.e. 85
>>difference = 85-80 = 5

IMO D

You cannot discover new oceans unless you have the courage to loose sight of the shore.