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If the cost of a yearly membership in a certain club increased from $199 to $299, what was the approximate percent incre

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If the cost of a yearly membership in a certain club increased from $199 to $299, what was the approximate percent incre

by BTGModeratorVI » Wed Jan 06, 2021 8:09 am

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If the cost of a yearly membership in a certain club increased from $199 to $299, what was the approximate percent increase in cost?

A. 33%
B. 50%
C. 66 2/3%
D. 100%
E. 150%

Answer: B
Source: official guide
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Re: If the cost of a yearly membership in a certain club increased from $199 to $299, what was the approximate percent i

by Scott@TargetTestPrep » Fri Jan 15, 2021 9:13 am
BTGModeratorVI wrote: ↑
Wed Jan 06, 2021 8:09 am
 If the cost of a yearly membership in a certain club increased from $199 to $299, what was the approximate percent increase in cost?

A. 33%
B. 50%
C. 66 2/3%
D. 100%
E. 150%

Answer: B
Source: official guide
Solution:

We can approximate the percent increase as if the cost were increased from $200 to $300. Therefore, we see that the amount of increase is $100, which is a 100/200 = 1/2 = 50% increase from $200.

Answer: B

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Re: If the cost of a yearly membership in a certain club increased from $199 to $299, what was the approximate percent i

by Brent@GMATPrepNow » Sat Jan 16, 2021 6:52 am
BTGModeratorVI wrote: ↑
Wed Jan 06, 2021 8:09 am
 If the cost of a yearly membership in a certain club increased from $199 to $299, what was the approximate percent increase in cost?

A. 33%
B. 50%
C. 66 2/3%
D. 100%
E. 150%

Answer: B
Source: official guide
When I scan the answer choices (ALWAYS scan the answer choices before determining which approach to use), I see that the answer choices are nicely spread apart. This means we can be quite aggressive with our estimation
For more on this, watch the video below

Percent increase = (100)(new value - old value )/(old value)

Percent increase = (100)(299 - 199)/(199) ≈ (100)(300 - 200)/(200)
≈ (100)(100)/(200)
≈ (100)(1)/(2)
≈ 50%

Answer: B

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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