Question

Ryan estimates the measurement of the volume of a popcorn container to be 98 cubic inches. The actual volume of the popcorn container is 86 cubic inches. What is the percent error of Ryan's measurement to the nearest thousandth?

Answer 1

difference: -4 cubic inches

% change: -10%

Explanation:

The difference between the new volume and the original volume is ...

(new volume) - (original volume) = (36 in³) - (40 in³) = -4 in²

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The percentage change is figured with respect to the original volume:

% change = (difference)/(original volume) × 100% = (-4 in³)/(40 in³) × 100%

= -1/10 × 100% = -10%