15% credited to FD account. What remains is: 100 - 15 = 85% 30% of this is spent in groceries. %age spent in groceries = 85%*30% = 25.5% So total amount spent = 15% + 25.5% = 40.5% of his salary. What is remaining finally: 100 - 40.5 = 59.5% 59.5% of his salary is 2389. So, if his salary is x,So Salary = 4015.13 Hope you got it :)