Max spends three times as long on his math homework than he does on his science homework. If he spent total of 64 minutes on math and science homework last night how long did i he spend on homework?

Let X = science homework.

Then math homework would be 3x (three times as long).

Now you have math plus science = 64 minutes:

x + 3x = 64

Combine like terms:

4x = 64

Divide both sides by 4:

x = 64 / 4

x = 16

He spent 16 minutes on science and 48 minutes on math.