In how much time would the simple interest on a certain sum be 0.125times the principal at 10% per annul.
I = P*r*t = 0.125P.
P*0.1*t = 0.125P,
Divide both sides by P:
0.1t = 0.125,
t = 1.25 Years.
P*0.1*t = 0.125P,
Divide both sides by P:
0.1t = 0.125,
t = 1.25 Years.