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Answer:
Holly must save $2845.81 at the end of each year
Explanation:
first calculate the value of tuition fees at n = 18
Cash flow formula = Tuition × 
Discounted CF formula = Cash flow ÷ 
10.00% 0
Year Cash flows Discounted CF
0 33,799.32 33799.32
1 36,165.28 32877.52
2 38,696.84 31980.86
3 41,405.62 31108.66
FV = $129,766.37
PV = 0
N = 18
rate = 10%
using PMT function in Excel
Annual contribution = $2845.81
Answer:
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Price elasticity can be calculated using the attached formula where:
the first term represents the % change in quantity and the second term represents the % change in price
% change in quantity = (100-120) / (220/2) = -2/11 x 100 = -18.1818%
% change in price = (7-5) / (12/2) = 33.3333%
price elasticity = 18.1818/33.3333 = 0.55Note that the price elasticity is usually taken as an absolute value.
Return on Investment = 83% or 0.83
total Profit = 75000
term = 6 yrs
annual profit = 75000 / 6 = 12500
initial investment = 15000
ROI = Net Profit / Total Asset
= 12500 / 15000
= 0.83 or 83% (0.83 x 100%)