Question

Marlene studied 10 minutes more than 4 times as long as Brianna. How many minutes did Brianna study if Marlene studied for 150 minutes? Explain how u found your answer.

Answer 1

Do you know how to set up an equation for this?

Answer 2

Well, here's the equation, it should help if you don't know how to do it already:
m = 4b + 10
m = time marlene studied
b = time brianna studied

So plug 150 into Marlene's variable:
150 = 4b + 10

And solve for b.

Do you know how to solve for b?