Question

Ivan's chocolate is 21% cocoa. If the weight of the chocolate bar is 84 grams, how many grams of cocoa does it contain? Round the answer to the nearest tenth.

Answer 1

17 grams of cocoa

Explanation:

The amount of cocoa will be 21% of the weight of the chocolate bar.

The chocolate bar weighs 84 grams, therefore, the number of grams of cocoa will be 21% of 84, we calculate it below:

`\begin{gathered} 84\cdot21\% \\ \\ 84\cdot(21)/(100)=17.01\approx17\text{ g} \end{gathered}`

The chocolate bar contains 17 grams of cocoa