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At the Frosty Ice Cream store, the number of cones sold fell by 20 per

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Bunuel
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At the Frosty Ice Cream store, the number of cones sold fell by 20 per [#permalink] New post   07 Jan 2019, 05:17
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At the Frosty Ice Cream store, the number of cones sold fell by 20 percent in November. If sales fell by a further 25 percent in December, what was the percent decrease in the number of cones sold in the whole two-month period?

A. 10%
B. 20%
C. 35%
D. 40%
E. 45%
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Re: At the Frosty Ice Cream store, the number of cones sold fell by 20 per [#permalink] New post   07 Jan 2019, 05:21
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Cone sold - 100
Now fell by 20 , so 80 sold
Fell by 25% = 60

% decrease = 40

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Re: At the Frosty Ice Cream store, the number of cones sold fell by 20 per [#permalink] New post   07 Jan 2019, 05:25
Bunuel wrote:
At the Frosty Ice Cream store, the number of cones sold fell by 20 percent in November. If sales fell by a further 25 percent in December, what was the percent decrease in the number of cones sold in the whole two-month period?

A. 10%
B. 20%
C. 35%
D. 40%
E. 45%



let intial be 100
100*.8*.75= 60
fall would be 100-60/100 = 40% IMO D
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Re: At the Frosty Ice Cream store, the number of cones sold fell by 20 per [#permalink] New post   18 Nov 2020, 10:44
Bunuel wrote:
At the Frosty Ice Cream store, the number of cones sold fell by 20 percent in November. If sales fell by a further 25 percent in December, what was the percent decrease in the number of cones sold in the whole two-month period?

A. 10%
B. 20%
C. 35%
D. 40%
E. 45%

\(-20 - 25 + \frac{(-25)(-20)}{100}\)

Or, \(- 45 + 5 = -40\), Answer must be (D)
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Re: At the Frosty Ice Cream store, the number of cones sold fell by 20 per [#permalink]
18 Nov 2020, 10:44
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