Question

Principal 4000rupees year 3 interest 1200rupees. What is the interest rate

Answer 1

Answer:

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Step-by-step explanation:

S.I.=(P*R*T)/100

$(p \times r \times t) \div 100 \\ \\( 4000 \times 3 \times r )\div 100 = 1200 \\ \\( 12000 \times r) \div 100 = 1200 \\ \\ r = 1200 \times 100 \div 12000 \\ \\ =r = 10\%$