Question

Solve the following problem. The owner of a toy store is taking inventory of bicycles and tricycles in an unusual way. He said he counted 50 wheels and 40 pedals.How many bicycles and how many tricycles did he have?

Answer 1

wheels = 3 t + 2 b = 50
pedals = 2 t + 2 b = 40
so subtract second from first
1 t + 0 b = 10
t = 10
then b = 10

check
3 t = 30
2 b = 20 so 50 wheels

2 t = 20
2 b = 20 so 40 pedals