a. If 8,000 units are produced and sold, what is the total amount of variable costs related to the units produced and sold? (Do not round intermediate calculations.)

b. If 12,500 units are produced and sold, what is the total amount of variable costs related to the units produced and sold? (Do not round intermediate calculations.)

Required information The Foundational 15 [L01-1, LO1-2, L01-3, L01-4, L01-5, LO1-6] (The following information applies to the questions displayed below.) Martinez Company's relevant range of production is 7,500 units to 12,500 units. When it produces and sells 10,000 units, its average costs per unit are as follows: Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Fixed selling expense Fixed administrative expense Sales commissions Variable administrative expense Average Cost per Unit $6.00 $3.50 $1.50 $4.00 $3.00 $2.00 $1.00 $0.50