A~B, what is the scale factor from B to A?

A. 1/2
B. 2/5
C. 2
D. 5/2

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.