Trina spent $30 for general admission at an amusement park. each ride cost $2.50. she spent a total of $67.50.
what arithmetic steps can you use to find how many rides trina rode?
a. divide 67.5 by 2.5, add 30 to the quotient.
b. add 67.5 and 30, divide the sum by 2.5.
c. subtract 30 from 67.5, divide the difference by 2.5.
d. multiply 30 by 2.5, subtract 67.5.

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m