8.) P 8500 is borrowed for 70 days at 18% per annum. How much will be due at the end of 70 days? Use exact simple interest.
A = P0 + I = P0 + P0r = P0 (1 + r)
I is the interest;
A is the end amount: principal plus interest;
P0 is the principal (starting amount);
r is the interest rate (in decimal form)
r = 18% : 365 days × 70 days = 3.45% or 0.0345
A = 8500 (1 + 0.0345) = 8793
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