SOLUTION: "You live near a mountain bike trail. You can rent a mountain bike and a safety helmet for $10 an hour. If you have your own helmet, the bike rental is $7 an hour. You can buy a he

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: "You live near a mountain bike trail. You can rent a mountain bike and a safety helmet for $10 an hour. If you have your own helmet, the bike rental is $7 an hour. You can buy a he      Log On


   

Question 834873: "You live near a mountain bike trail. You can rent a mountain bike and a safety helmet for $10 an hour. If you have your own helmet, the bike rental is $7 an hour. You can buy a helmet for $28. How many hours do you need to use the trail to justify buying your own helmet?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
28/3=9 1/3 plus tax
so at least ten uses of the bike and trail justifies having your own helmet
you would also benefit from buying your own bike since you spend $70 for ten bike rentals