Giovanni walks four dogs a week at a rate of $8 per dog. He is offered a job washing dishes for $10 an hour. Both jobs require that Giovanni work five hours a week, What is the total monetary cost or benefit to Giovanni taking the new job?

4 dogs at $8 a dog = $32,                          5hrs at $10 an hour = $50                          So dishwashing is better.

But if the dog walking fee is per hour then it's $32 x 5 = $160                                      So dog walking is better .