The lowest parking level is 15 meters below street level, and the 17th story is 51 meters above street level. If the elevator rises at a rate of 2 meters per second, how long in seconds, could q person ride the elevator when stating from the lowest level

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)