Problema Solution
Mike has a rowboat for crossing the river. The rowboat can hold only 200 pounds without sinking. If Mike has his two little brothers with him, Jerry and David, who weigh 100 and 80 pounds respectively, and Mike weighs 160 pounds, how can all three boys get across the river?
Answer provided by our tutors
Jerry and David cross together: 100 + 80 < = 200
Jerry stays.
David goes back and gets off the rowboat. Mike gets in and crosses over alone.
Jerry goes back and picks up Jerry.
Jerry and David cross together.