Question

at what rate percent per annum,compound interest will 10000 amount to 13310 in three years

Answer 1

formula is : A = P+( 1+r÷100)^n
A=13310
P=10000
T=3 years
13310=10000(1+r÷100)^3
13310÷10000=(1+r÷100)^3
3√1331÷1000=1+r÷100
11÷10=1+r÷100
11÷10-1=r÷100
1÷10=r÷100
1÷10×100=r
r=10%
so rate percent per annum is 10%
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