Dan's Bikes rents bikes for $10 plus $4 per hour. Ashley paid $42 to rent a bike. For how many hours did she rent the bike?

1 Answer
Jan 8, 2017

Ashley rented the bike for #8 hours#

Explanation:

Start with the base rate of #$10#

Next add the hourly rate #$4* hours# or #$4h#

Total Cost equals Base Rate plus Hourly Rate

TC #= $42#
Base Rate #= $10#
Houry Rate #=$4h#

#$42 = $10 + $4h#

Subtract #$10# from both sides to determine the Hourly Rate Cost

#$42 - $10 = cancel($10) cancel(-$10) + $4h#

#$32 = $4h#

Divide by #$4# on each side to find the number of hours.

#($32)/($4) = (cancel($4)h)/(cancel($4))#

#8 = h#

Ashley used the bike for #8# hours