Raju is walking down an escalator (a moving staircase) which is moving down. From the top, he takes 20 steps to reach the bottom, while Rajat, who walks twice as fast as Raju, takes 30 steps from the top to reach the bottom.
Q. Find the total number of steps visible at any point of time on the escalator.
a) 40 b) 48 c) 60 d) 56
Q. Find the number of steps that Rajesh, a friend of Raju, would take to reach the bottom, if he starts from the top and walks half as fast as Raju.
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I don't understand this solution as there's some ambiguity regarding the percentages in the individual solutions and the mixture. Can someone help me please
The total cost of 2 pencils, 5 erasers, and 7 sharpners is 30 rs, while 3 pencils and 5 sharpners cost rs15 more than 6 erasers. By what amount does the cost of 39 erasers and 1 sharpner exceeds the cost of 6 pencils?
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A train travelled 75% of the way from town X to town Y by travelling for A hrs at an average speed of B km/hr. The train travels at an average speed of S km/hr for the remaining part of the journey. Which of the following expression represents the average speed of the entire journey