Manoj rappelled 30 ft down from the top of a canyon. He then rappelled an additional 10 ft down the canyon.What must he do to return to the top of the canyon?

Answer:To return to the top of the canyon he rappelled 40 ft above .Step-by-step explanation:Given  : Manoj rappelled 30 ft down from the top of a canyon. He then rappelled an additional 10 ft down the canyon.To find : What must he do to return to the top of the canyon.Solution : We have given Manoj rappelled down from the top of a canyon = 30 ft.Again he rappelled an additional down the canyon = 10ft.So, total distance he covered = 30 ft + 10 ft = 40 ft . Now , He is 40 ft down from the top of the canyon .To return to the top of the canyon he rappelled 40 ft above .Therefore, To return to the top of the canyon he rappelled 40 ft above .