In a class of 50 students the number of students who offer accounting is twice as the number who offer economic. 10 students offer neither of the two subjects and 5 students offer both subjects. how many students offer accounting, economics and only one subject?

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?