Answer :
So first subtract the initial fee of 3.50 from the 21.50 you have
Now you have 18.00
From that since each ride is 2.00 you can divide 18 by 2
Therefore you can ride 9 rides with that amount of money
Now you have 18.00
From that since each ride is 2.00 you can divide 18 by 2
Therefore you can ride 9 rides with that amount of money