D Limited has two employees, John and Wayne, making product E. During one week, both employees worked for 40 hours. John's rate of pay was $3.20 per hour and he produced 180 units of E. Wayne's rate of pay was $2.75 per hour and he produced 150 units. The budgeted time allowed to complete one unit of E is 15 minutes. Each employee is guaranteed a minimum wage based on his respective hourly rate. (a) Calculate the gross wage for the two employees if payment is determined on a day worked basis? (b) Calculate the gross wage for the two employees if payment is determined on a piecework basis at rate of $0.72 per unit? (c) What is the gross wage for the two employees if a bonus is paid at $2.40 for each hour saved?