Gunnar and Akir are each trying to save $100 for spending at an amusement park. Gunnar started with $32 and earns $8 per hour at a local game shop. Akir has nothing but he earns $16 per hour mowing lawns. If they both work the same number of hours each day, who will have the spending money saved first, and how many working hours will it take him to save the money?