Computer retailer $A$ is selling a computer at a 20 percent discount from its suggested retail price. Computer retaile

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VJesus12: Legendary Member; Posts: 2276; Joined: Sat Oct 14, 2017 6:10 amFollowed by: 3 members

by VJesus12 » Wed Aug 26, 2020 3:39 am

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Computer retailer $A$ is selling a computer at a 20 percent discount from its suggested retail price. Computer retailer $B$ promises to match this price and then discount it a further 10 percent. Computer retailer $B$’s final price is what percent of the suggested retail price?

A. 75%
B. 72%
C. 70%
D. 68%
E. 28%

Answer: B

Source: Princeton Review

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Source: Beat The GMAT — Problem Solving | Wed Aug 26, 2020 3:39 am

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Scott@TargetTestPrep: GMAT Instructor; Posts: 8155; Joined: Sat Apr 25, 2015 10:56 amFollowed by: 29 members; Location: Los Angeles, CA; Thanked: 43 times

Re: Computer retailer $A$ is selling a computer at a 20 percent discount from its suggested retail price. Computer ret

by Scott@TargetTestPrep » Sun Aug 30, 2020 7:55 am

VJesus12 wrote: ↑
Wed Aug 26, 2020 3:39 am
Computer retailer $A$ is selling a computer at a 20 percent discount from its suggested retail price. Computer retailer $B$ promises to match this price and then discount it a further 10 percent. Computer retailer $B$’s final price is what percent of the suggested retail price?

A. 75%
B. 72%
C. 70%
D. 68%
E. 28%

Answer: B

Solution:

We can let the suggested retail price of the computer be $100. Therefore, retailer A is selling the computer for $80, and retailer B is selling it for 80 x 0.9 = $72. We see that retailer B’s final price is 72% of the suggested retail price.

Answer: B

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swerve: Legendary Member; Posts: 2545; Joined: Sun Oct 29, 2017 2:04 pmFollowed by: 6 members

Re: Computer retailer $A$ is selling a computer at a 20 percent discount from its suggested retail price. Computer ret

by swerve » Mon Aug 31, 2020 2:21 pm

VJesus12 wrote: ↑
Wed Aug 26, 2020 3:39 am
Computer retailer $A$ is selling a computer at a 20 percent discount from its suggested retail price. Computer retailer $B$ promises to match this price and then discount it a further 10 percent. Computer retailer $B$’s final price is what percent of the suggested retail price?

A. 75%
B. 72%
C. 70%
D. 68%
E. 28%

Answer: B

Source: Princeton Review

Let's assume that marked price is
$a= \$100$

Then, discount $\$80$

Therefore, $b = \$80*0.9 = $72$ or $72\%$ of the suggested retail price.

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