A sum invested at compound interest becomes₹800 in 3 years and₹840 in years. What is the rate of interest per annum?
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1
Step-by-step explanation:
Rate is 5 percent
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Answered by
1
Step-by-step explanation:
simple interest for one year = 840 - 800 = 40%
rate of interest = 40×100/800×1 = 5%
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