An escalator moves towards the top level at the rate of 8 ft.sec and its length is 160 feet.

An escalator moves towards the top level at the rate of 8 ft.sec and its length is 160 feet. If a person walks on the moving escalator at the rate of 2 feet per second towards the top level, how much time does he take to cover the entire length.

Quiz

Answer/Solution

16 sec

Steps/Work

Time taken to cover the entire length = tot.dist/resultant speed
= 160/ (8+2)
= 16sec
ANSWER:C

Gain Calculator / Auto Solver

An escalator moves towards the top level at the rate of ft. Sec and its length is feet. If a person walks on the moving escalator at the rate of feet per second towards the top level, how much time does he take to cover the entire length.

Calculated Answer

16

Step by Step Solution

In order to solve problem, you must evaluate n1 / (n0 + n2).

n0 =8
n1 =160
n2 =2