Math  /  Word Problems

QuestionFind the average mass of pennies given that 10.00%10.00\% weigh 2.15 g2.15 \mathrm{~g} and 90.00%90.00\% weigh 2.156 g2.156 \mathrm{~g}.

Studdy Solution
Round the calculated average to three significant figures.
Weighted average=2.1556g2.16g\text{Weighted average} =2.1556\,g \approx2.16\,gSo, the average mass of pennies in this sample is2.16 g.

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