Samantha W. answered 09/20/17
Tutor
5.0
(475)
Chemistry Major with Extensive Mathematics Experience
Okay, so the first thing you want to do is convert the question into equations, right?
You know A = 59.9
You also know A = 12.5 + 6B
(Because the problem tells you 59.9 is 12.5 more than 6*B)
So you can say, then, that 59.9 = 12.5 + 6B. Now you just have to solve for B!