Mr. Jaweri decided to walk down the escalator on the 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?
- 1 Answers
- 1299 Views
- 3i Infotech, I also Faced
- E-Mail Answers
Answer / Parasar Mahalik
Let's assume that Mr. Jaweri takes a constant time t to step down one step (ignoring any acceleration or deceleration effects). When he steps down 26 stairs, it takes him 30 seconds, so the total distance covered is 26 * t = 30 seconds * some constant speed s. Similarly, when he steps down 34 stairs, it takes him 18 seconds, so the total distance covered is 34 * t = 18 seconds * some constant speed s. Since both distances are equal, we can set up an equation: (26 * t) = (18 * t) * 3/2 => 26 = 27t/2. Solving this gives us t = 0.93 seconds per step. To find the height of the stairway, multiply the number of steps by the time taken per step: 26 + 34 = 60 steps * 0.93 seconds/step = 55.8 seconds. However, since it is a stairway, it doesn't make sense to have a fraction of a second for each step. We can round this up to the nearest whole number: 56 steps.
| Is This Answer Correct ? | 0 Yes | 0 No |
WHAT IS CALLED FLYING IN AEROPLANE?
You have 5 jars of pills. Each pill weighs 10 gram, except for contaminated pills contained in one jar, where each pill weighs 9 gm. Given a scale, how could you tell which jar had the contaminated pills in just one measurement?
During a trip to a wildlife safari, 29 tourists clicked photographs of tigers, 21 clicked photos of elephants, 26 clicked photos of deer; 14 clicked photos of elephants and deer, 12 clicked photos of tigers and elephants, 15 clicked photos of deer and tigers, and 8 clicked photos of all the three animals. Each tourist took at least one photograph. 1. How many tourists went to the wildlife safari? 2. How many tourists clicked photographs of tigers only?
Ram, Shyam and Gumnaam are friends.Ram is a widower and lives alone and his sister takes care of him. Shyam is a bachelor and his niece cooks his food and looks after his house. Gumnaam is married to Gita and lives in large house in the same town. Gita gives the idea that all of them could stay together in the house and share monthly expenses equally. During their first month of living together, each person contributed Rs.25. At the end of the month, it was found that Rs 92 was the expense so the remaining amount was distributed equally among everyone. The distribution was such that everyone received a whole number of Rupees. How much did each person receive?
Sum of money at compound interest amounts of thrice itself in 3 years. In how many years will it take 9 times itself.
X is 3 years younger to Y. X's father is a businessman who invested 10000/- at 8% rate of interest n obtained his amount after 10 years. Y's father is a job holder who invested around 20000 at 2% rate n obtained his amount after 20 years.Now Compunded both of dem get around ABC rs/- (dnt remenbr). After 5 years the ratio of ages of X n Y is 1:2. Now X's father is 20 years older to Y n Y' father is 30 years more than X. After 20 years again. X's mother asks X's father to purchase a LCD TV which costs around 45000/-. what is the age of X n Y together
Mangal Pandey fired the first shot of the Revolt of 1857 at ?
In the rectangle LMNO, the perpendicular bisector of LN divides the longer side LM in a ratio 2: 1. Then the angle between LN and MO is
please send 10 year question papers of clerical and probationary officer question papers of sbi bank ........syed0460@gmail.com this is my email id....
194 base 10 = ____ base 5
In a certain code, LABOUR is written as KBAPTS. How is CANDID written in that code? (a) DBOEJE (b) DZOCJC (c) BBMCHC (d) BBMEHE (e) None of these
A number when divided by 100 leaves a quotient (Q) and a remainder (R). How many three-digit natural numbers are there such that Q + R is divisible by 11?
English 
