Answer:
It contains 55.5 grams of cocoa.
Step-by-step explanation:
This question can be solved using a rule of three.
The weight of the chocolate bar, which is of 91 grams, is 100% = 1. We have that it is 61% = 0.61 of cocoa. How many grams of cocoa are there?
91 grams - 1
x grams - 0.61
Applying cross multiplication
x = 91*0.61 = 55.5
It contains 55.5 grams of cocoa.
