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omeli [17]
3 years ago
11

Can someone solve this? (25points)

Mathematics
2 answers:
Tems11 [23]3 years ago
7 0
Interest = Principal * n (years)* rate/100 so based on the first problem of $780 = ($3000 principal *2 years * r) /100, r=13. So in this case the interest rate was 13%. 

We can use the 13% to calculate the second part of the question by using the formula of i=Pnr/100 to get:

i=4500*9*13

So i = $5265
Nezavi [6.7K]3 years ago
5 0
It should be 5265.00$
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