Highland Company produces a lightweight backpack that is popular with college students. Standard variable costs relating to a single backpack are given below:

$\backslash$table$[[,\backslash$table$[[$Standard$],[$Quantity or$],[$Hours$]],$Standard Price o$,$or Rate,$\backslash$table$[[$Standard$],[$Cost$]]],[$Direct materials,?,$$6$ per yard,,$ $?$Highland Company produces a lightweight backpack that is popular with college students. Standard variable costs relating to a single backpack are given below:

Overhead is applied to production on the basis of direct labor$-$hours. During March, $1,000$ backpacks were manufactured and sold. Selected information relating to the month's production is given below:

$\backslash$table$[[,\backslash$table$[[$Materials$],[$Used$]],$Direct Labor,$\backslash$table$[[$Variable$],[$Manufacturing$],[$Overhead$]]],[$Total standard cost allowed$*,$$$16,800,$$$21,000,\backslash$table$[[$$$4,200$