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21 Jan 2021, 07:33
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
63% (01:56) correct
37%
(02:11)
wrong
based on 253
sessions
History
Date
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Not Attempted Yet
The original price of a jacket was $80. This price was discounted \(x \) percent during a sale. Mary used a coupon to buy a jacket for \(y\) percent off the sale price. How much did Mary pay for the jacket?
(1) \(x + y - \frac{xy}{100} = 32\)
(2) \(x + y = 35\)
(1) \(x + y - \frac{xy}{100} = 32\)
(2) \(x + y = 35\)
Updated on: 23 Jan 2021, 09:45
Originally posted by QuantMadeEasy on 21 Jan 2021, 23:20.
Last edited by QuantMadeEasy on 23 Jan 2021, 09:45, edited 1 time in total.
Last edited by QuantMadeEasy on 23 Jan 2021, 09:45, edited 1 time in total.
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It is a successive percent change question
The price got decreased by x% and further decreased by y%
Final price = 80(1 - x/100) ( 1 - y/100)
= 80 (1 - x/100 - y/100 + xy/10000)
= 80/100 ( 100 - x - y + xy/100)
= 80/100 [100 - (x + y - xy/100)]
1) Final price can be calculated
Sufficient
2) Only value of x + y is known
Not sufficient
A is correct
The price got decreased by x% and further decreased by y%
Final price = 80(1 - x/100) ( 1 - y/100)
= 80 (1 - x/100 - y/100 + xy/10000)
= 80/100 ( 100 - x - y + xy/100)
= 80/100 [100 - (x + y - xy/100)]
1) Final price can be calculated
Sufficient
2) Only value of x + y is known
Not sufficient
A is correct
22 Jan 2021, 12:38
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IanStewart, BrentGMATPrepNow, avigutman, EMPOWERgmatRichC, GMATBusters
Dear mentors, could you please resolve the DS posted above? Thanks in advance!
Dear mentors, could you please resolve the DS posted above? Thanks in advance!
