Question

please answer as fast as you can..........it is principal

Answer 1

let the principal be 'x'


amount = 2 × x = 2x , time = 5yrs


simple interest = amount - principal

= 2x - x = ₹x

simple Interest = p × r × t / 100

x = x × r × 5 / 100



5r = 100 => r = 20%


rate of interest r = 20%


let it be thrice the principal in t years


amount = 3x


simple interest = amount - principal

= 3x - x = ₹2x ,


Simple interest = p × r × t/ 100


2x = x × 20 × t / 100



2 = t/ 5 => t = 10 years



Answer: the sum will be thrice of principal in 10 years.