Question

A man walks up a stationery escalator in 90 sec . When this man stands on a moving escalator he goes up in 60 sec . The time taken by the man to walk up the moving escalator is

a) 30 sec
b) 36 sec
c) 45 sec
d) 48 sec

Answer 1

30 sec as

90 - 60 = 30

Therefore he walks up in 30 sec