Mr Ang bought a television set for his parents with 50% of his salary. He saved 60% of the remaining money in bank and had $180 left. How much did Mr Ang have at first?

Mr Tan bought a television set for his parents with 40% of his salary. He saved 70% of the remaining money in bank and had $162 left. How much did Mr Tan have at first?

Gopi gave 30% of the money he had to his parents, 15% of the remaining money to each of his 2 children, one-third of the money now left was spent for his personal expenses and the remaining money Rs.9800 was deposited in the bank. How much money did Gopi gave initially?

Mr. Barker saved his money for 47 years and had $3,700,028 in the bank. He used his money to go on an adventure and spent $967,300. How much did he have left after his adventure?$

At first, Paul had some money. He spent 20% of it on some books and of the remainder on food. After that, his parents gave him $90. The ratio of the total amount of money he had in the end to the amount of money he had at first was 3 : 2. How much money did Paul have at first?

Mr Suen saved $620 from his salary. He gave half of the remaining to his 4 children equally and contributed the rest to charity. If each child gets $m, how much was his salary?