Help me with my math question im gonna give you 10 points just to answer that thank you

Can anyone me with 32,33,36,37,and 40.

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Solve the proportion of 16/50=x/156.25