Please help with these maths questions

1) From a ribbon of lenghth 2 2/7m, I used 4/7m to wrap a box and 1 5/7m to tie a bow. How many metres of ribbon did I used?

2) Sammy's water tank contained 7 2/5 L of water in the morning. By the end of the day, there was 1 4/5 left. How many Litres of water was used?

3) Yesterday, James swam for 2 2/3h and studied for 1 2/3h. Today, he studied 3 1/3h and did not swim. How many more hours did he study today than yesterday?

Thank you

2 answers

we will be happy to check your work for you.
My answers for the above questions are
1) 0

2) 5 3/5

3) 1 2/3