Question

Cono-Cool air conditioners cost $350 to purchase, result in electricity bills of $160 per year, and last for 5 years. Luxury Air models cost $550, result in electricity bills of $120 per year, and last for 8 years. The discount rate is 21%.
a. What are the equivalent annual costs of the Econo-Cool models? (Do not round intermediate calculations. Round your answers to 2 decimal places.)

b. What are the equivalent annual costs of the Luxury Air models? (Do not round intermediate calculations. Round your answers to 2 decimal places.)

c. Which model is more cost-effective? Econo-Cool Luxury Air

d-1. Now you remember that the inflation rate is expected to be 10% per year for the foreseeable future. What are the equivalent annual costs of the Econo-Cool and Luxury Air models? (Do not round intermediate calculations. Round your answers to 2 decimal places.)

d-2. Which model is more cost-effective? Econo-Cool Luxury Air

Answer 1

Answer:

a) The equivalent annual costs of the Econo-Cool models= $436.50

b) The equivalent annual costs of the of Luxury Air models = $515

c)Econo-cool model

d 1 .(i) $464.15

      (ii) $597.95

d 2 . Econo-cool model

Explanation:

a) Econo-cool model

Purchase price= $350

Discount =21%

Electricity bill= $160 per year

Annual cost per year will be

$350 * 79/100 =$276.50 ------after applying the 21% discount

$276.50+$160 =$436.50 -------after adding electricity cost per year

The equivalent annual costs of the Econo-Cool models= $436.50

b) Luxury Air Models

  Purchase price at the shop=$550

  Discount =21%

  Buying price =79/100*$500 = $395

 Electricity cost = $120 per year

 Annual cost = $395+$120 =$515

The equivalent annual costs of the of Luxury Air models = $515

c) The Econo-cool model

d (1) Econo-cool model

$350 *110/100 =$ 385 -----due to inflation

Apply the discount = 385*79/100 =$304.15

Add the cost of electricity = $304.15+$160 =$464.15

For Luxury Air model

$550*110/100 =$605

Apply the discount = $605*79/100 =$477.95

Add electricity bill = $477.95 +$120 =$597.95

d(2) Econo-cool model