at what rate per cent will a sum of money double itself in 6 years
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➡️ Let the rate be 'y' and principal be 'x'.
➡️ So, x * y * 6 / 100 = x
Or, y = 100/6 = 16.67 years.
That's it..
Answered by
3
Let the sum of money that's principal be x.
Time = 6years
Amount after 6 years becomes double = 2x
Therefor, Simple Interest = Amount - Principal = 2x-x = x
Rate per annum = SI×100/ P×T = x×100/x×6 = 100/6 = 50/3 = 16.66 % approx
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