Material Requirements Planning.$($MRP$)$

What number should be placed in the spot presently filled with the $x?$

$\backslash$table$[[$Finished Product D$,$JAN,FEB,MAR,APR,MAY,JUN$],[$Gross Requirements,$25,45,35,50,10,30],[$Schedule Receipts,,$100,,,,],[$Planned Delivery,,,$25,,25,],[\backslash$table$[[$Projected on$],[$Hand$],[$Inventory$]],\backslash$table$[[$Beginni$],[$ng$],[$Invento$],[$ry $=55$