A man walks up a stationary escalator in 90sec. 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 man walks up a stationary escalator in 90sec. When this man stands o

1.	A man walks up a stationary escalator in 90sec. 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
Answer» 30s 45s 36s 48s Answer :C