Bernie counted the cars and motorcycles that passed his house in 45 minutes. He counted 26 vehicles and 88 tires. How many motorcycles passed his house?

Question

anonymous · Answer

c+m=26
4c+2m=88

anonymous · Answer

use substitution method to solve

anonymous · Answer

do you know how to?

anonymous · Answer

c=26-m
4c+2m=88 

Substitute c=26-m into the second equation. 

4(26-m)+2m=88

Solve for m.

anonymous · Answer

the first equation c+m=26 (represents the number of cars+motorcycle that equal to 26 vehicles.)

the second equation is the number of tires each vehicle has (cars have 4 tires and motorcycles have 2. Therefore, the equation came up to be 4c+2m=88)

Do you kind of understand it now? :/