Ahmad spent 159 minutes for the scooter ride
Ahmad paid $3 fee to start the scooter ride
She also paid 11 cents per minutes of the ride
The total bill at the end of the ride is $20.49
The first step is to convert 11 cents to dollars
= 11/100
= 0.11
Therefore the number of minutes can be calculated as follows
20.49 = 0.11x + 3
collect the like terms
20.49 - 3 = 0.11x
17.49 = 0.11x
x= 17.49/0.11
x= 159
Hence Ahmad spent 159 minutes for the scooter ride
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