Question

An art teacher needs to make his own purple paint he has 1/3 gallon of red paint and 3/8 gallon of blue paint left in the supply closet if he uses all the red and blue paint how much purple paint can he make

Answer 1

Okay, So We Need To Convert The Two Fractions To Common Denominators.
The Least Common Denominator Is 24.
So, He Has 
8/24 Red, And 9/24 Blue. Now, Add Them.
 8     9      17
--- + --- = ----
24   24     24

So, He /She Can Make 17/24 Gallons Of Blue Paint.