If amanda got on the bus at 2:40 and got off the bus at 3:15. how long was amanda on the bus

35 minutes

Step-by-step explanation:

She was on the bus for : 20 before 3:00 and for : 15 after 3:00, for a total of ...

:20 + : 15 = : 35

That is, 35 minutes.

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There are 60 minutes in an hour. If you like, you can change an hour to 60 minutes and write the exit time as 3:15 = 2:75. Then you can perform the subtraction

2:75 - 2:40 = 0:35

35 minutes