Question

14. In how many years will a sum of money becomes three times the
rate of interest 10% per annum?​

Answer 1

Answer:

20 years

Step-by-step explanation:

let the principal be x

so, the amount =3x

SI= 3x-x=2x

let the time be Z

SI=p*r*t/100

2x=x*10*z/100

2 = z/10 (we cancel the x and 10 by 100)

z= 20 years