Can someone explain this to me?

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

41/17 as a decimal rounded to the nearest hundredth

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did