at what rate of simple interest a certain sum will be doubled in 10 years
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let principal be ' x '
after 10 years,
amount = 2x ,
S.I = amount - principal
S.I = 2x - x = ₹ x
S.I = p × r × t / 100
x = x × r × 10/100
10r = 100 => r = 10%
Answer: rate of interest = 10%
after 10 years,
amount = 2x ,
S.I = amount - principal
S.I = 2x - x = ₹ x
S.I = p × r × t / 100
x = x × r × 10/100
10r = 100 => r = 10%
Answer: rate of interest = 10%
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