gabriella rents bikes for $13 plus $7 per hour. Eduardo paid $27 to rent a bike for how many hours did he rent the bike?
2 answers:
The total cost was $27. The total cost is made up of a fixed amount, $13, and an hourly amount. Subtract the fixed amount from the total cost to find the hourly amount.
$27 - $13 = $14
$27 = total cost
$13 = fixed cost
$14 = hourly cost
Since the hourly rate is $7/hour,
$14/($7/hr) = 2 hours
He rented for 2 hours.
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