A family of four was stranded on an island, two adults and two children. They then discivered a boat, which can only hold 200 pounds(the most) at a time. Each parent weighs 150 pounds and each child 50 pounds. How mant trips will it take to get the who family to the nearby city?
if kid + parent go first and drop off parent. thats one trip. Then you have to go back for the other kid 2 trips. Then drop that kid to the city three trips. At this piont everyone is not at the city so it cant be 3 trips.