Question
A car covers a certain distance at the speed of 30 km/h
and comes back at the speed of 20 km/h. What is the average speed of the car for the entire journey?Solution
Let the distance be x km. Time taken to go = x / 30 hours, Time taken to return = x / 20 hours. Total time taken = x / 30 + x / 20 = (2x + 3x) / 60 = 5x / 60 = x / 12 hours. Average speed = Total distance / Total time = (2x) / (x / 12) = 24 km/h.
If the entry code for Batch A on Thursday (4th May,2017) was ācamera affixes to the hands knuckles that takes inā, then which of the fol...
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Who sits second to the right of seventh letter from right in step VI?
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18 empower 46 provider 77 general 93 opinion
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Which of the following will be step III of the above input?
Input: Design usually recreate vintage and old styles
How many more steps is required to complete the rearrangement?
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