Sophie ruth is eating a 50-gram chocolate bar which contains 30% cocoa how many grams of cocoa is in the chocolate bar?

15 Grams

Step-by-step explanation:

The total mass of the chocolate bar is 50 grams, meaning if the 50 grams are divided by 30% (the amount of cocoa) it is equal to 15 grams

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;