A distributor sells water cooling units for $840 each. The operating profit is 20% on cost and markup is 50% on cost. a. Calculate the cost per cooling unit. W Round to the nearest cent fered during a sale if it made a profit of $53.20 b. Calculate the rate of markdown 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 be decimal nlaces