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Home > MC1 > Chapter 10 > Lesson 10.2.3 > Problem 10-103

10-103.

10% of $72 is $7.20
20% = 2(10%)

10% of $72 is $7.20

10% of $72 is $7.20
1% of $72 is $0.72
18% = 2(10%) − 2(1%)

18% of $72 = 2($7.20) − 2($0.72)
18% of $72 = $14.40 − $1.44

18% of $72 is $12.96