Question

In the first 15 seconds of the rollercoaster, passengers are carried up a 90-meter hill, plunged down 62 meters, and quickly taken back up a 38-meter rise. How much higher or lower from the start of the ride are they after these 15 seconds?​

Answer 1

90-62=28

28+38=66

90-66=24

in 15 seconds they are 24 meters lower