Members of a senior class held a car wash to raise funds for their senior prom. they charged $3 to wash a car and $5 to wash a pick up truck. If they earned a total of $275 by washing a total of 75 vehicles, how many cars did they wash?

Question

anonymous · Answer

would the equation be something like 3c+5(75-c)=275 ?

asapbleh · Answer

3c+5t=275
c+t=75

t=75-c
3c+5(75-c)=275
3c+375-5c=275
-2c=-100
c=50

try to plug it in now

anonymous · Answer

okay thanks :) i got 50 too.. just cheking :)

asapbleh · Answer

kk