Given the forecast and booked orders shown in the table below, and a beginning inventory of $25,$ what is the master production schedule quantity for period $4$ if you want to end period $4$ with $0$ inventory?

$\backslash$table$[[$Period$,1,2,3,4],[$Forecasted Demand,$70,60,60,55],[$Booked Orders,$80,60,30,60],[$Projected ending inventory,,,,$],[$Master production schedule,$70,50,65,],[$Alaailable to Promise,$0,,,]]$

$50$

$60$

$55$

$35$