An electrician charges $80 an hour. his apprentice earns $42 an hour. the apprentice works on a job 3 hours less than the plumber. together they earn $850. how many hours did they each work?

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.