Question

At what rate of simple interest if the sum double in 2years​

Answer 1

Let the rate be r,

Principal=P, A=2P,time=2,

SI=A-P=>SI=2P-P=>P

SI=PRT/100

P=(P*R*2)/100

R=(P*100)/2*P

R=50 %

.

Hope it helps you....mark as brainliest.