Question

It costs $20.50 to enter an amusement park and $0.25 to ride a ride. You have $21.50. Write an equation that represents the number r of rides you can ride.

Answer 1

Answer:

4 rides

Step-by-step explanation:

Total amount = $21.50

Entry charge = $20.50

Amount left = $21.50 - 20.50 = $1

Number of rides

$r = \frac{1}{0.25} = \frac{100}{25} = 4$

Another way:

$0.25\:r + 20.50 = 21.50\\0.25\:r = 21.50 - 20.50\\0.25\:r = 1\\r = \frac{1}{0.25}\\r = \frac{100}{25}\\r = 4$