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eamccoy1
27.06.2019 •
Mathematics
The price of cable service changed from $35.00 per month to $42.00 per month. what was the percent of increase? a. 5% b. 7% c. 17% d. 20%
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Ответ:
D. 20%
Step-by-step explanation:
percent change = (new number - old number)/(old number) * 100%
The new number is the increased price, $42, and the old number is the original price, $35.
percent change = ($42 - $35)/($35) * 100%
percent change = ($7)/($35 min) * 100%
percent change = 0.20 * 100%
percent change = 20%
Since the percent change is a positive number, it is a percent increase.
The percent increase was 20%.
D. 20%
Ответ: