A bakery sold 111 cupcakes in one day. The head baker predicted he would sell 91 cupcakes that day. What was the percent error of the baker's prediction?

18.02%

81.98%

20%

21.98%

Question

02-02-2015
Mathematics

Answered

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A bakery sold 111 cupcakes in one day. The head baker predicted he would sell 91 cupcakes that day. What was the percent error of the baker's prediction?

18.02%

81.98%

20%

21.98%

Sagot :

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Анонимidn Анонимidn · Answer 1 · 2015-02-04T08:26:58-05:00

Анонимidn Анонимidn

04-02-2015

[tex]111-91=20-error\\\\\begin{array}{ccc}91&-&100\%\\\\20&-&p\%\end{array}\ \ \ |cross\ multiply\\\\\\91p=100\cdot20\\91p=2000\ \ \ \ |divide\ both\ sides\ by\ 91\\\\\boxed{p\approx21.98\ (\%)}\leftarrow answer[/tex]

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