Answer:
$12.60
Explanation:
30% is just 0.3 of a number, do 100%-30% which gives you 70% or 0.7, 0.7 of 18 would be 12.6 or $12.60
30% of 18 = 5.4
18 - 5.4 = 12.6
Answer is $12.60
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