You can buy a car that is advertised for $24,600 on the following terms: (a) pay $24,600 and receive a $4,600 rebate from the manufacturer; (b) pay $410 a month for 5 years for total payments of $24,600, implying zero percent financing. a. Calculate the present value of the payments for option (a) if the interest rate is 1.25% per month. b. Calculate the present value of the payments for option (b) if the interest rate is 1.25% per month. (Do not round intermediate calculations. Round your answer to 2 decimal places.) c. Which is the better deal? Option a Option b

A. $20,000

B. $17,234.18

C.Option (b)

Explanation:

Obviously, the option with lower Present Value would be the best option to buy the car. The Present Value of the options can find out as following

REQUIREMENT A

Price of car = $24,600  

Rebate = $4,600

Present value of the payments for option  = Price of the car – rebate  

Present value of the payments for option (a) = $24,600 - $4,600

Present value of the payments for option = $20,000

REQUIREMENT B

We can use the following Present Value of an Annuity formula to calculate the present value of the payments

PV of the payments for option  = PMT * [1-(1+i) ^-n)]/i

PV of the payments for option (b) (PV) =?

Monthly payment PMT =$410 per month

Number of payments n = 5 years *12 months = 60

Monthly interest rate i=1.25% per month or 0.0125

PV of the payments for option  = $410 x [1- (1+0.0125) ^-60]/0.0125

PV of the payments for option  = $17,234.18

REQUIREMENT C.

Which is the better deal?

Option (b) is better deal as the present value of payments ($17,234.18) is less than Present value of the payments for option (a); $20,000.

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

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