Question

in what time will the si on rs400 at10% per anum be the same as si on rs1000 for 4 years at4% per anum

Answer 1

Ans 4 years

Solu:-
simple interest = (p*r*t)/100

According to question

(400*10*t)/100 = (1000*4*4)/100
t = (1000*4*4)/(400*10)
t = 4 years