Question

A farmer bought chickens and ducks to restock his farm. He also purchased milking cows for his wife’s milk-making enterprise. The total cost was $11425. He remembered that the 50 chickens cost $65 each and the cows cost $45 each. He counted 10 ducks in the paddock, but he could not remember what they cost. His wife reminded him that the total number of animals he bought was 75.
Work out for the farmer the price for each duck.

Answer 1

Total money spent is $11425 buying 75 animals
each chicken costs $65 so 50 costed the farmer $3250
each cow costs $45 so 15 cows costed the farmer $675
ducks purchased were 10
to find how much the ducks costs we will add the money spent the farmer and subtract it from the total amount spent.
11425-3250-675=$7500
10 ducks = $7500
so one duck costs 7500/10=$750
the price for each duck is $750