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 $=$