Non-Financial Wizard

[hisgrace]

8 x chickens cost �1, 1 x sheep cost �1, 1 x cow cost �10. A farmer bought 100 animals of which some were of each type and paid 100. How many sheep did he buy?
N-FW

[MrsT]

I think the questioner means 100 andimals to cost �100.

7 cows = �70
72 chickens = �9
21 Sheep = �21