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,

the new elevation above sea level would be 380 + 182 + 208 - 235 = 535 ft.