Question

Sophie is eating a 50-gram chocolate bar which contains 30% of coca. How many grams of coca are in the chocolate bar?

Answer 1

So 30% of the chocolate bar is cocoa and if the bar is 50g it's the following:

(50x30)/100 = 15

which means 15 grams of the chocolate bar is pure cocoa

Answer 2

30/100 * 50 = 15 gram of coco