If A bird collector wants to buy 100 parakeets for exactly 100 Blue parakeets are 10.00 green parakeets 3.00 and yellow parakeets 0.50 He wants to have at least one of each how can he do this?

To meet the collector's requirements, let ( x ) be the number of blue parakeets, ( y ) the number of green parakeets, and ( z ) the number of yellow parakeets. The equations to solve are:

1. ( x + y + z = 100 ) (total number of parakeets)
2. ( 10x + 3y + 0.5z = 1000 ) (total cost in dollars)

Given that he wants at least one of each type, we can start with ( x = 1 ), ( y = 1 ), and then solve for ( z ) and adjust accordingly until all conditions are satisfied. One possible solution is ( x = 90 ), ( y = 9 ), and ( z = 1 ).