Question

how to find the percent when they already give you the answer. For example: _% of 40=15 what would the answer be and how do you find it out

Answer 1

So the question is what percent of 40 is 15
Let's write proportion
100%-40
X% - 15
X=15·100:40=1500:40=37,5%

Answer: 37,5% of 40 is 15.