Question

a certain amount of money amount to 8600rupees in 3 years and to 9800 rupees in 4 years. find the principal and rate of interest​

Answer 1

Answer:

We can get SI of 3 years = 12005 - 9800 = 2205

SI for 5 years = (2205/3)*5 = 3675 [so that we can get principal amount after deducting SI]

Principal = 12005 - 3675 = 6125

So Rate = (100*3675)/(6125*5) = 12%

Step-by-step explanation:

Hope it works