Question

If the simple interest on a certain sum of money for 3 years is the three-tenth of the sum, then find the rate of interest per annum.

Answer 1

I think this is the answer

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Answer 2

Answer:

LET, THE PRINCIPAL BE - X

THEN SI= 3X/10

TIME= 3 YEAR

LET THE INTEREST BE - Y

P×R×T/100=SI

X×Y×3/100=3X/10

Y×3=3/10

Y=1/10

Y%=1/10×100

Y=10%