17. Four marks example problems II

Rani earns \(₹200\) on the first day and spends some amount in the evening. She earns \(₹300\) on the second day and spends double the amount as she spents on the first day. She earns \(₹400\) on the third day and spends \(4\) times the amount as she spents on the first day. Can you give an algebraic expression of the total amount with her, at the end of the third day.

 

Answer:

 

Total amount \(=\)