Assume that the maintenance costs for HACO Ltd$.$ Have been observed as follows within the relevant range of $5,000$ to $8,000$ direct labour hours:

$\backslash$table$[[$Month$,$D$.$L$.$Hs$,$Maintenance Cost $($sh$),,],[$January$,5,500,745,,],[$February$,7,000,850,,],[$March$,,5,000,7],[,,,700,]]$

$12$

$\backslash$table$[[$April$,6,500,820],[$May$,7,500,960],[$June$,8,000,1,000],[$July$,6,000,825]]$

Required

Determine the fixed and variable cost elements of the mixed costs?