Question
A train covers a certain distance at a speed of 12 km/h
and the next same distance with a speed of 21 km/h and the next same distance with a speed of 36 km/h. find the average speed?Solution
Since the distance is same in all the conditions. Therefore, Average speed = 3xyz/(xy + yz + zx) Average speed = 3 x 12 x 21 x 36/(12 x 21 + 21 x 36 + 12 x 36) Average speed = 3 x 12 x 21 x 36/(252 + 756 + 432) = 27216/1440 = 18.9 km/hr  Â
Find the difference between the average no. of cars sold by V in all the 3 Qrtrs to the total no. of cars sold by Y in all 3 Qrtrs?
Which of the following statement is correct?
Ratio between which of the following is the second lowest.
What is the ratio of number of cars sold by X, Y and Z in the 3rd Qtr. to the number of cars sold by V, W and Z in the 1stQrtr?
Monthly expenditure of a family on different heads is shown in the following pie chart.
The amount spent on Children Education. Transport and Ren...
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