Question

Bobby has baseball practice Monday, Wednesday, and Friday. Each practice is 2 1/2 hours. Bobby says he will have practice for 4 hours each week.

Part A
Without multiplying, explain how you know Bobby is incorrect.

Part B
How long will Bobby have baseball practice this week? Type your answer as a mixed number. Show your work.

Answer 1

It's simple that since he practices for 2 1/2 hours each practice that if he goes for 2 practices he is already in 5 hours. He will have practiced 7 1/2 hours this week.
2 1/2*3 = 7 1/2

Answer 2

A: I know Bobby is incorrect because just by looking at the amount of hours, 4 hours would be less than 2 practices.
(I'm not sure thats the right answer, sorry...)

B: Bobby will have practice for 7 1/2 or 7 and a half hours.
2 1/2 * 3 (amount of days of practice)
^
7 1/2

(I'm pretty positive about B but not so sure about A, say you didnt understand it but you tried.)