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The average television prime-time advertising unit of 30

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The average television prime-time advertising unit of 30  [#permalink]

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New post 24 Apr 2017, 00:12
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A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

85% (00:45) correct 15% (00:44) wrong based on 34 sessions

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The average television prime-time advertising unit of 30 seconds
cost $30,000 in 1973 and $50,000 in 1977. What was the
approximate percent increase in the cost of a unit?

A)20%
B)33%
C)40%
D)60%
E)67%

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Re: The average television prime-time advertising unit of 30  [#permalink]

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New post 24 Apr 2017, 00:48
VyshakhR1995 wrote:
The average television prime-time advertising unit of 30 seconds
cost $30,000 in 1973 and $50,000 in 1977. What was the
approximate percent increase in the cost of a unit?

A)20%
B)33%
C)40%
D)60%
E)67%


(Increase)/(original)*100 = 20,000/30,000*100 = ~67%.

Answer: E.
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Re: The average television prime-time advertising unit of 30  [#permalink]

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New post 04 Sep 2018, 04:25
VyshakhR1995 wrote:
The average television prime-time advertising unit of 30 seconds
cost $30,000 in 1973 and $50,000 in 1977. What was the
approximate percent increase in the cost of a unit?

A)20%
B)33%
C)40%
D)60%
E)67%


We can use the percent change formula:

(New - Old)/Old x 100

(50,000 - 30,000)/30,000 x 100

20,000/30,000 x 100

2/3 x 100

200/3 ≈ 67

Answer: E
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Re: The average television prime-time advertising unit of 30  [#permalink]

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New post 04 Sep 2018, 09:27
VyshakhR1995 wrote:
The average television prime-time advertising unit of 30 seconds
cost $30,000 in 1973 and $50,000 in 1977. What was the
approximate percent increase in the cost of a unit?

A)20%
B)33%
C)40%
D)60%
E)67%


Neglect the trailing 0's and count percentage

\(\frac{5 - 3}{3}*100\)

= 67% , Answer must be (E)
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Re: The average television prime-time advertising unit of 30 &nbs [#permalink] 04 Sep 2018, 09:27
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