Math
posted by Jerald .
Ramundus is making a xylophone. So far, he has bars that are 1 3/4 feet 1 7/12 feet and 1 2/3 feet long. What is the length of the longest bar
3/4?
Alana practiced dancing for 11/4 hours on Monday 19/8 hours on Wednesday and 2 3/5 hours on Friday. On which day did she practice on the closest to 2 hours? Explain your reasoning/
Im not sure for this one

11/4 = 2 3/4 = 2 30/40
19/8 = 2 3/8 = 2 15/40
2 3/5 = 2 24/40 
For 2 3/5 how did you get the answer 2 24/40 since it already has the whole number on 2 3/5. Do you put the whole number when you divide?

Yes. I changed 3/5 to 24/40 so the fractions would have a common denominator.

So is the answer 11/4

No. Please reread the question.

How can I find out which fraction is the closest to 2 hours?

All of those numbers are over two hours. Which has the smallest fraction?

3/8?

Right.