Answer:
$14.7
Explanation:
First, we need to convert the percentage to a decimal. 30% = .30
Now we multiply the price times the decimal, 21 x .30 = 6.3
We subtract this amount from the previous cost. 21 - 6.3= $14.7
$14.70
Find the 30% decrease:
21*0.3 = 6.3
Find new price:
21-6.3 = 14.7
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