1rs 20 sparrows 1rs 1 crow 5rs 1 parrot - With Answer for Puzzle

Can you Solve it ?

We have total Rs. 100 and we need to buy exactly 100 Birds. The Price list for Birds is as follow:

1) 1 Parrot = Rs. 5
2) 1 Crow. = Rs. 1
3) 20 Sparrows = Rs. 1

You have to spend all $100 and also you have to buy all three types of Birds.

Answer:
80 Sparrows = Rs. 4
19 Parrots = Rs. 95
1 Crow = Rs. 1