The simple interest on a sum of money is 1 9 th of the principal and the number of years is equal to the rate percent per annum. The rate of interest per annum is
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Step-by-step explanation:
Here It's given that SI:P=1:9
wkt. SI =PRT/100
Put SI =x and P=9x and R =T
We will get equation
×=9x *R*R/100
R^2= 9 /100
R= 3/10 =0.3
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