Question

Ronak rode on a roller coaster. He was at an elevation of 55 m above the mean sea level when he started the ride. During the ride the elevation changes as 412 m, -125 m, 272 m,-343 m, 490 m,- 640 m and 50 m. What is his elevation relative to the mean se
a level at the end of the ride? ​

Answer 1

412 -125 +272 -343 +490 -640 +50 = 116m