At some airports there are speed ramps to help passengers get from one place to

Question

At some airports there are speed ramps to help passengers get from one place to another. A speed ramp is a moving conveyor belt on which you can either stand or walk. Suppose a speed ramp has a length of 121 m and is moving at a speed of 2.2 m/s relative to the ground. In addition, suppose you can cover this distance in 78 s when walking on the ground. If you walk at the same rate with respect to the speed ramp that you walk on the ground, how long does it take for you to travel the 121 m using the speed ramp?

Explanation / Answer

121/78 = 1.551 m/s

1.551 + 2.2 = 3.751 m/s

121/3.751 = 32.26 sec

So, it takes 32.26 seconds to travel the 121 m using the speed ramp.

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