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it takes one minute for a passenger s†an ding on an escalator to reach the top.if the escalator does not move it takes him 3 min. to swalk up .How long will it take for the passenger to arrive at the top if he walks up the moving escalator? |
| Answer» it takes one minute for a passenger s†an ding on an escalator to reach the top.if the escalator does not move it takes him 3 min. to swalk up .How long will it take for the passenger to arrive at the top if he walks up the moving escalator? | |