A mountain climber starts a climb at an elevation of 380 ft. above sea level. At his first rest stop he has climbed 182 ft., and by his second rest stop he has climbed another 208 ft. It is getting late in the day, so the climber starts his way down the mountain. If the climber descends 235 ft, how much does he need to descend to return to his original starting point?
The climber has climbed a total of 182 + 208 = <<182+208=390>>390 ft.
Therefore, the climber is currently at an elevation of 380 + 390 = <<380+390=770>>770 ft. above sea level.
To return to his original starting point, the climber needs to descend 770 - 380 = <<770-380=390>>390 ft.