
Home > MC1 > Chapter 10 > Lesson 10.2.2 > Problem 10-84
10-84.
10% of 340 is 34
20% = 2(10%)
Try following the steps in parts (a) and (b).
10% of 130 is 13
10% of 137 is 13.7
1% of 137 is 1.37
18% = 2(10%) − 2(1%)
18% of 137 = 2(13.7) − 2(1.37)
= 27.4 − 2.74
= 24.66