SOLUTION: it costs $3 for a car and $10 for a bus to park in a parking lot. there are 102 vehicles in the lot and altogether they paid $418 to park. how many cars are there in the lot ?
Algebra ->
Customizable Word Problem Solvers
-> Misc
-> SOLUTION: it costs $3 for a car and $10 for a bus to park in a parking lot. there are 102 vehicles in the lot and altogether they paid $418 to park. how many cars are there in the lot ?
Log On
Question 204956: it costs $3 for a car and $10 for a bus to park in a parking lot. there are 102 vehicles in the lot and altogether they paid $418 to park. how many cars are there in the lot ? Answer by rfer(16322) (Show Source):
You can put this solution on YOUR website! car=x=86
bus=y=16
3x+10y=418
x+y=102, x=102-y
----------------
3(102-y)+10y=418
306-3y+10y=418
7y=112
y=16
----------------
x+16=102
x=86