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

4 rides

Explanation:

Total amount = $21.50

Entry charge = $20.50

Amount left = $21.50 - 20.50 = $1

Number of rides

`r = (1)/(0.25) = (100)/(25) = 4 \\`

Another way:

`0.25\:r + 20.50 = 21.50\\</p><p>0.25\:r = 21.50 - 20.50\\</p><p>0.25\:r = 1\\</p><p>r = (1)/(0.25)\\</p><p>r = (100)/(25)\\</p><p>r = 4\\`