Sally just got back from a vacation with her family. They had been driving for three days, travelling 8 1/2 hours each day. How many hours were they in the car altogether?

57.5 hr

I think

Matthew is wrong.

8.5 * 3 = 25.5 hours

explain in writing what barrow,trade,or regroup mean in subtration

25 1/2

To find out how many hours Sally and her family were in the car altogether, we first need to calculate the total number of hours they spent driving each day and then add up those hours for all three days.

Sally and her family drove for three days, with each day consisting of 8 1/2 hours.

To find the total number of hours spent driving each day, we can simply multiply 8 1/2 hours by 3, since they drove for 8 1/2 hours each day.

8 1/2 hours is equal to 8 + 1/2 hours, which is equal to 8.5 hours.

Multiplying 8.5 hours by 3 gives us 25.5 hours, which is the total number of hours they drove over the three-day period.

Therefore, Sally and her family were in the car altogether for 25.5 hours.