If John buys a stereo marked down 7 percent from its $650 original pri

Question

If John buys a stereo marked down 7 percent from its $650 original price while Sally buys the same stereo marked down only 5 percent, how much more does Sally pay for the stereo?

A. $2
B. $12
C. $13
D. $78
E. $618

Ana4001 · Answer

Sally pays 650*95%

That is equal to 617.5

So option E

Posted from my mobile device

Archit3110 · Answer

650*.95-650*.93
= 13
IMO C

UB001 · Answer

If John buys a stereo marked down 7 percent from its $650 original price while Sally buys the same stereo marked down only 5 percent, how much more does Sally pay for the stereo?

7% = 5% + 1% + 1%
10% of 650 = 65 ===> 1% of 650 = 6.5
5% of 650 = 65/2 = 32.5

7% of 650 = 32.5 + 6.5 + 6.5 = 45.5
John's Buying Price = 650 - 45.5 =604.5
Sally's Buying Price = 650 - 32.5 =617.5
Difference = 617.5 - 604.5 = $13

Answer Option C is Correct.

Rajeet123 · Answer

The question is asking how much  more does sally pay. Not how much does she pay.

avernaza · Answer

You don't need to do all the math (time consuming). 
You know:
John buys at 7% discount and Sally at a 5% discount: so Sally will pay (7%-5%) = 2% more than John
1% of 650 = 6.5 ; 2% = 13 (so Sally will pay $13 more)

Abhishek009 · Answer

(7% - 5%)*650

= 2%*650

= 13, Answer must be (C) 13

If John buys a stereo marked down 7 percent from its $650 original pri

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Problem Solving (PS) Questions

If John buys a stereo marked down 7 percent from its $650 original pri

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards