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torisob [31]
3 years ago
12

If 6 notebooks cost 2.50, how much will 9 notebooks cost at the same rate?

Mathematics
2 answers:
ipn [44]3 years ago
5 0
I believe it is $3.33
GuDViN [60]3 years ago
3 0
$2.50/6 = $0.41

$0.41 x 9 = $3.69
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ololo11 [35]

By applying the formulas of present and future values of annuity we can solve this problem. In this mortgage problem, first we have to find loan amount after the down payment. It is 699,000 - 699,000 * 0.2 = 559,200$. We have to set it as PV (Present Value) of annuity. Using the PV formula PV = A \frac{[1- \frac{1}{(1+r)^{N}}]}{r}, we first find A, which is an annual payment. Exact calculation with mortgage calculator gives us A = 33,866.56$. After finding it, plugging this number into FV (Future Value) formula FV = A\frac{[(1+r)^{N}-1]}{r}, we find the value of the future value and it is 1,185,329.66$. And the total financial charge is 1,185,329.66 - 559,200 = 626,129.66$

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3 years ago
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2 years ago
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4 0
2 years ago
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Answer:

Step-by-step explanation:

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