We have total $100 and we need to buy exactly 100 Birds. The Price list for Birds is as follow:
1) 1 Parrot = $5
2) 1 Crow. = $1
3) 20 Sparrows = $1
You have to spend all $100
You have to buy exact 100 Birds
You have to buy all three types of Birds. So you must have all three kind of birds when you finish buying.
HOW TO SPEND $100 IN THIS CASE?