PLZ HELP ASAP!!!!!!!,Boris is playing on the mall escalators. One escalator goes up, one goes down, and one is out of service; otherwise, they're all identical. The up and down escalators go at the same speed. You can assume that Boris always runs at the same speed.Boris can run up the up escalator in 6 seconds. He can run up the down escalator in 30 seconds. How long does it take him to run up the out-of-service escalator? Explain your answer
Accepted Solution
A:
The answer to your question is 10 seconds. I know this because:
distance divided by speed=time let t=time t=2*6(30/36)=10 t=10 So, it took Boris a total of 10 seconds to run up the out of service elevator.