5th grade math
posted by mary .
Kat has 30 vehicles. Some are bicycles and some are cars. These vehicles have a total of 88 wheels. How many bicycles are there?

C+B=30
4C+2B=88 
28
posted by mary .
Kat has 30 vehicles. Some are bicycles and some are cars. These vehicles have a total of 88 wheels. How many bicycles are there?
C+B=30
4C+2B=88
28