Question

At the rate of 5% p.a. S.I. on an amount will treble itself in how many years?

Answer 1

Answer:

let the principal be p

let amount be 2p

time=si*100/p*r

p*100/p*5=20years

Answer 2

Answer:

Rate:-5%

S.I:-x

A:-2x

find the time

p:-A-S.I

2x-x_ X

time:- s.i x100/P X R

X X 100/ X x 5%

ans:-20years