Please show complete solutions.

Problem 1

Hoi Chong Transport, Ltd., operates a fleet of delivery trucks in Singapore. The company has determined that if a truck is driven 105,000 kilometers during a year, the average operating cost is 11.4 cents per kilometer. If a truck is driven only 70,000 kilometers during a year, the average operating cost increases to 13.4 cents per kilometer.

Help me through these questions:

1. Using the high-low method, estimate the variable operating cost per kilometer and the annual fixed operating cost associated with the fleet of trucks.

2. Express the variable and fixed costs in the formY = a + bX.

3. If a truck were driven 80,000 kilometers during a year, what total operating cost would you expect to be incurred?

Problem 2

Whirly Corporation's contribution format income statement for the most recent month is shown below: Total Per Unit Sales (10, 000 units) 350, 000 S 35.00 Variable expenses 200, 000 20.00 Contribution margin 150, 000 S 15.00 Fixed expenses 135, 000 Net operating income S 15, 000 Help me here: (Please consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 100 units? 2. What would be the revised net operating income per month if the sales volume decreases by 100 units? 3. What would be the revised net operating income per month if the sales volume is 9,000 units