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ChallengeYourself1. Kate likes to walk down moving escalators and she takes one step at a time. When she walks down at a rationof 2 steps per second, she reaches the bottom from the top after 18 steps. When she is exhausted, she willwalk down at a rate of 1 step per second and she will reach the bottom from the top after 12 steps. Find the timetaken for her to reach the bottom from the top if she just stands on the escalator.2. In a 100-metre race, Vishal beats Jun Wei by 10 m. The two boys plan to have another race, whereVishalwill start 10 m behind the starting point. Both boys run at the same rate as before. Will it be a draw? Or whowill win the race and by how many metres? |
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