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 or a sport utility vehicle. If they earned a total of $275 by washing a total of 75 vehicles,how many cars did they wash?

A.25
B.34
C.45
D.50

PLEASE EXPLAIN AND SHOW HOW YOU DID IT THANKS!

let x be car, y be utility
3x+5y=275
x+y=75
3x+3y=225
2y=50
y=25
x=50

a) How man