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During an eight-week period, a doughnut store conducted a promotion by

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During an eight-week period, a doughnut store conducted a promotion by  [#permalink]

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New post 16 Nov 2015, 03:29
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  55% (hard)

Question Stats:

60% (01:38) correct 40% (01:30) wrong based on 94 sessions

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During an eight-week period, a doughnut store conducted a promotion by giving away one free doughnut with every doughnut purchased. If the store sold and gave away a total of K doughnuts per week, and each doughnut sold for $0.25, how many dollars worth of doughnuts did the store give away?

A. K/8
B. K/4
C. K
D. 3K/2
E. 6K

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During an eight-week period, a doughnut store conducted a promotion by  [#permalink]

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New post 16 Nov 2015, 03:37
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Total number of doughnuts sold and given away per week = k
Total number of doughnuts sold and given away in 8 weeks = 8k
Number of doughnuts given away in 8 weeks = 8k/2 = 4k
Selling price of a doughnut = .25 $
Dollar worth of doughnuts given away = 4k*.25 = k

Answer C
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Re: During an eight-week period, a doughnut store conducted a promotion by  [#permalink]

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New post 16 Nov 2015, 03:43
1 week = k doughnuts sold.
Actual number of doughnuts for which the price is charged = k/2
Number of weeks = 8
Number of doughnuts sold in 8 weeks for which the price is charged = 8*(k/2) = 4k
Price of each doughnut sold = 0.25
Price of 4k doughnuts = 0.25*4k = K

Answer: C
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During an eight-week period, a doughnut store conducted a promotion by  [#permalink]

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New post 16 Nov 2015, 03:48
Total number of donuts sold and given away in a week =K =(K/2 + K/2)=(sold + free)
cost of each donut =$0.25
no of free donuts in a week= 0.25*K/2=K/8
in 8 weeks time 8*K/8 =K
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Re: During an eight-week period, a doughnut store conducted a promotion by  [#permalink]

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New post 31 Jul 2017, 07:48
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Re: During an eight-week period, a doughnut store conducted a promotion by   [#permalink] 31 Jul 2017, 07:48
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