what number is 15% of 50?

I'm working this problem two different ways and I'm getting different answers. my two answers are 30 or 7.5.
Can somebody tell me which answer is correct?

3 answers

7.5 is the answer
it's 0.15*50 = 7.5
plus 30 is more than half which is 25 so disregard the other way.
Thanks