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If the cost of a yearly membership in a certain club increased from $1

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Bunuel
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If the cost of a yearly membership in a certain club increased from $1 [#permalink] If the cost of a yearly membership in a certain club increased from $1   22 May 2020, 05:57
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88% (00:35) correct 12% (00:51) wrong based on 180 sessions
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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%


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B
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Re: If the cost of a yearly membership in a certain club increased from $1 [#permalink] If the cost of a yearly membership in a certain club increased from $1   22 May 2020, 06:05
Bunuel wrote:
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%


PS21233


$199 to $299 ≈ $200 to $300

\(\frac{300-200}{200}*100=\) 50%

Answer B
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Re: If the cost of a yearly membership in a certain club increased from $1 [#permalink] If the cost of a yearly membership in a certain club increased from $1   22 May 2020, 06:05
Answer is 50% (B option)

199*(100+x)/100=299
(100+x)=29900/199
100+x=150.25
X=50% increase.

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BrentGMATPrepNow
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If the cost of a yearly membership in a certain club increased from $1 [#permalink] If the cost of a yearly membership in a certain club increased from $1   Updated on: 17 May 2021, 07:19
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Bunuel wrote:
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%
PS21233


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

RELATED VIDEO

Originally posted by BrentGMATPrepNow on 24 May 2020, 06:22.
Last edited by BrentGMATPrepNow on 17 May 2021, 07:19, edited 1 time in total.
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Re: If the cost of a yearly membership in a certain club increased from $1 [#permalink] If the cost of a yearly membership in a certain club increased from $1   17 Jan 2021, 12:23
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Bunuel wrote:
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%


PS21233

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 $1 [#permalink] If the cost of a yearly membership in a certain club increased from $1   17 Oct 2022, 02:46
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Re: If the cost of a yearly membership in a certain club increased from $1 [#permalink]
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