I have no clue at all please help The two aspects of measuring direct labor costs are (1) the quantity of labor effort that is to be included, and

I have no clue at  all please help

The two aspects of measuring direct labor costs are (1) the quantity of labor effort that is to be included, and (2) the unit price by which the labor quantity is multi- plied to arrive at labor cost. Why are these considered separate and distinct aspects of measuring labor cost?