21. Exercise problems XXI

Meena went to a bank to withdraw $Rs.2000$. She asked the cashier to give her $Rs.50$ and $Rs.100$ notes only. Meena got $25$ notes in all. Find how many notes of $Rs.50$ and $Rs.100$ she received.

 

Meena has  notes of $Rs. 50$ and notes of $Rs. 100$.