Please help I need the answers quick.

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m