Question

Asam of rupees 1,780 becomes Rs2,136 in 4 years find the rate of interest the sum that will become rupees 810 in 7 years at the same rate of interest​

Answer 1

Step-by-step explanation:

let , rate of interest = r %

so,1780+ 1780 × r×4/100 = 2,136

or, 1780×r/25 = 2136 - 1780

or, 356×r/5 = 356

or, r = 356 ×5/356

or, r = 5

so, rate of interest = 5%

810 in year = 810 + 810×5×7/100 = 810 + 285.5 =1095.5