Marco predicted that he would sell 180 blankets. He actually sold 150 blankets. What are the values of a and b in the table
below? Round to the nearest tenth if necessary
Percent Error
Error
Absolute error
Item
Blankets
Approximate value
180
Exact value
150
Ratio
a
Percent error
b
b- 16.7%
160.0 -20%
180 - 83.3%
a-
D-100%
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