Math, asked by AnannyaSampada, 3 months ago

In two successive years the interest on a certain sum at CI payable annually is 350/- and 420/-.Find the rate of interest​

Answers

Answered by prasanthikuchipudi
1

Answer:

Rate is 20%

Step-by-step explanation:

CI for 1 year R=350                     (1)

CI for 2nd year 2R+R^2/100=420  (2)

by diving (1) by (2)

R/2R+R^2/100=350/420

6R=5R(1+R/100)

600=500+5R

R=20%

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