You and your friends have decided to build a skateboard ramp behind your house. you have already purchased $500 in materials and are considering renting an electric saw. it costs $20/hour to rent an electric saw. you estimate it will take 6 hours to build the ramp. if you decide to use your saw, which is a handsaw, you will not have to pay anything to rent an electric saw, but it will take 15 hours to build the ramp. regardless of the decision, you will need to ask for time off from your job, which pays $12/hour.
(a) if you use your handsaw, the explicit costs of the ramp are $
(b) the explicit costs of the ramp are $ if you rent an electric saw.
(c) if you use a handsaw, the implicit costs of the ramp are $
(d) if you rent an electric saw, the implicit costs of the ramp are $
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Ответ:
$15
Explanation:
The formula for calumniating compound interest is as below
A= P x ( 1 + r) ^1
For this case
A= Amount after one year
P = principal: $500
r= Interest rate 3% or 0.03
n = time in years: 1
A= $500 x ( 1 + 0.03) ^ 1
A = $500 x(1.03)
A= $500 x 1.03
A =$515
The interest missed is the future value - amount collected after one year.
=$515- $500
=$15