Table for Question $27$

$\backslash$table$[[,$Initial Cost,Monthly Cost,Termination Fee$],[$Hitchkins plo,$1,500,50,500],[$Wando inc,$1,250,60,0],[$Hefters Itd,$1\mathrm{.}650,10,100]]$

At the end of the $4$ month period Hetfer is $$19,800$ below forecast for sales of new

licences. How many licences should they have sold?

$$