4. The Blitz Corporation employs six workers in painting stripes on parking lots. The employees are paid by a daywork plan at $6.80 per hour. On the basis of past contracts, the manager, Ruby Smith, has established a standard of 50 yards of striping per hour for each painter. The company has just accepted a contract for a new shopping center parking lot with 6,600 yards of stripes.

a. Determine the labor cost for the contract if the painters work at efficiencies of 85, 95, 105, and 115 percent.

b. The manager is concerned about completing the contract before the new shop- ping center opens. She can use only three painters, so she has offered to pay $0.12 per yard for each yard of striping above standard. What will be the labor cost if the three workers finish the lot in a 40-hour week?

c. What will each painter earn per week, before deductions? How does this figure compare with the pay for an ordinary 40-hour week?