peter lost 8 marbles in a game. this number was one fifth of the number that he started with. how many marbles he have at the beginning

Teresa is maintaining a camp fire. she can keep the fire burning for 4 hours with 6 logs. she wants to know how many logs (y) she needs to keep the fire burning for 18 hours. she assumes all the logs are the same how many logs does tressa need to make a 18 hour fire?