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PtichkaEL [24]
3 years ago
5

Suppose that the demand curve for compact disks is given by P = 600 – Q and that the supply curve is given by P = 0.5 Q, where Q

is the quantity of compact disks and P is their price. What is the price elasticity of demand at the equilibrium price and quantity?
a. –2.00b. –0.02c. –0.50d. –0.05e. –0.20
Business
1 answer:
otez555 [7]3 years ago
7 0

Answer: -0.5

Explanation:

From the information given,

Demand curve = P = 600 – Q

Supply curve = P = 0.5Q

Equilibrium = Qd = Qs

Therefore, 600 - Q = 0.5Q

600 = Q + 0.5Q

600 = 1.5Q

Q = 600/1.5

Q = 400

Since P = 600 - Q

P = 600 - 400

P = 200

Price elasticity will be:

= (dQ/dP) × (P/Q)

=(-1) × (200/400).

= -1 × 0.5

= -0.5

The price elasticity is -0.5

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So you can retire early, you have decided to start saving $500 a month starting one month from now. You plan to retire as soon a
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Answer:

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In this question, we are asked to calculate the number of years it would take to accumulate $1,000,000 if there is a plan to save $500 per month at an interest rate of 5%.

To solve this, we use the following mathematical formula:

Future value of annuity = Annuity payment * {(1+r)^n - 1}/r

Where r is the monthly interest rate and n is the number of months it will take.

From the question, we can identify the following;

Since he earns 5% interest on savings, the actual monthly interest rate will be 5%/12 = 0.4167% = 0.004167

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We substitute these values into the equation:

1,000,000 = 500 * [(1+0.004167)^n - 1]/0.004167

8.334 = (1.004167)^n - 1

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To get n, we simply take the log on both sides of the equation

Log 9.334= nLog 1.004167

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n = 537 months

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