Question

Lena's chocolate bar is 51% cocoa. If the weight of the chocolate bar is 86 grams, how many grams of cocoa does it contain? Round your answer to the nearest tenth.

Answer 1

Given that Lena chocolate bar is 51% and the weight of the chocolate bar is 86 grams

therefore the amount of cocoa in the chocolate bar is given by

51% of 86 grams

so,

51% means 51/100 = 0.51

therefore, the amount of cocoa in the chocolate bar is

0.51 x 86 = 43.86

= 43.86

so when rouding to the nearesr tenth, its = 43.9

therefore, the chocolate bar cotains 43.9 grams of cocoa.