In 2 years ,a sum of rs 4000 on simple interest amounts to rs 6000 .in what time rs 400 will be converted into rs 600
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The answer is 2 years.
simple interest (I)= principal (P) x no of years (N) x interest rate (R)
2000 = 4000 x 2 x r
R = 2000/8000 = 0.25 or 25%
Now, time to convert 400 (P) to 600, that is 200/- as interest (I) and we found R= 25%
solving, 200 = 400 x n x 25% ⇒ n = 200 / 400 x 25% = 200/100 = 2 years
simple interest (I)= principal (P) x no of years (N) x interest rate (R)
2000 = 4000 x 2 x r
R = 2000/8000 = 0.25 or 25%
Now, time to convert 400 (P) to 600, that is 200/- as interest (I) and we found R= 25%
solving, 200 = 400 x n x 25% ⇒ n = 200 / 400 x 25% = 200/100 = 2 years
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