Other Company Numerical Ability

Mr. Shah decided to walk down the escalator of a tube station. He found  that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins  to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?

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Other Other Question

you drive to store at 20 mph return by same route at 30 mph.Discounting time spent at store what was your average speed Select the option that is true keeping in mind the statements and the conclusions:

Statements:
Some shirts are pants. All pants are black

Conclusions:
1. All black pants are shirts.
2. Some shirts are black

A. Only conclusion 1 is true
B. Only conclusion 2 is true
C. Both are true
D. Neither one is true