math
posted by LESLIE on .
a plumber has 12 1/2 feet of plastic pipe he uses 3 2/8 feet for the sink line and 5 3/4 feet for the washing machine . he needs approximately 3 1/2 feet for a disposal. does he have enough pipe left for a disposal?

Hint: It's a lot easier to change these fractions to decimals.
Then subtract the amount he uses for the sink line and the washing machine from the total amount of pipe.
I'll be glad to check your answer.