Question

If Rs. x are invested at r% simple interest to get amount Rs. y, then find the period for which it was invested.​

Answer 1

Answer:

Correct option is

A

20% p.a.

Let the sum=Rs. x

Time =10 years

It triples in 10 years then amount =3x

Simple interest=3x−x=2x

S.I=

100

PRT

∴R=

P×T

S.I×100

⇒R=

x×10

2x×100

=20 %