Question

A man walks up a stationary escalator in 90see,
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 1

Answer:

36

1/t=1/t1+1/t2

=t1t2/t1+t2=90*60/90+60=90*60/150

=36