A 10% monthly salary increase resulted in a TK. 9000 per year increase in salary for an employee. What was his monthly salary before the increase?
A
Tk. 5000
B
Tk. 9000
C
TK. 7500
D
TK. 12000
Correct Answer: TK. 7500
Yearly increase = 9000 tk Monthly increase = 9000/12 = 750 tk 10% of Salary is = 750 tk 100% of Salary is = (750×100)/10 = 7500 tk