Need help asap please

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

2.5 milligrams is equivalent to how many grams

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.