Question

At what rate of interest per annum does a
sum double after 20 years, SL​

Answer 1

Answer:

50

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Answer 2

Answer:

5%

Step-by-step explanation:

Let principle = x

Amount = 2x

simple intrest = 2x -x =x

rate of interest

$\frac{x \times 100}{x \times 20}$

$\frac{100}{20} percent$

5%