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What is the percent increase in the average number of hours

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What is the percent increase in the average number of hours [#permalink] New post 19 Jun 2018, 13:49
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What is the percent increase in the average number of hours spent watching prime time sports programs between high school and college?


A. 2%

B. 5%

C. 34%

D. 40%

E. 54%
[Reveal] Spoiler: OA

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Re: What is the percent increase in the average number of hours [#permalink] New post 21 Jun 2018, 01:55
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The number given for each type of prime time program is in percentage.

Hence we have to first find the actual time for the prime time sports for the two type of viewers: high-school and college.

High-school = \(0.25 * 12 = 3\) hrs
College = \(0.3 * 15.4 = 4.62\) hrs

Therefore \(%\)increase = \(\frac{(4.62 - 3)}{3}\) \(* 100\) = \(54\)
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Re: What is the percent increase in the average number of hours   [#permalink] 21 Jun 2018, 01:55
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