A distributor sells water cooling units for $850 each. The operating profit is 20% on cost and markup is 55% on cost.

a. Calculate the cost per cooling unit.

Round to the nearest cent

b. Calculate the rate of markdown offered during a sale if it made a profit of $55.50 per machine.

%

Round to two decimal places

c. What should be the rate of markdown offered to sell the machines at the cost price?

%

Round to two decimal places