Question

After 3 successive rises aftabs salary became equal to378/125 of his initial salary by what percentage was the salary rised the first time if the third rise was twice as high as% as the 2nd rise was twice as high % as the 1st rise?.

Answer 1

$S=$ Initial salary $=100$

$F=$ Final salary $=140.49$

$R=$ Rate of increase

$N=$ Number of increase

$F=S\ast {(1+R)}^n$

$140.45=100{(1+R)}^3$

$R=0.12$.