There are 50 poles with a constant distance between each pole A car takes 20 sec to reach the 10th p...........

Quantitative Aptitude ( CCS) Time & distance

There are 50 poles with a constant distance between each pole . A car takes 20 sec. to reach the 10th pole . How much more time will it take to reach the last pole ?

120.11 sec.

108.88 sec.

88.8 sec.

125.4 sec.

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Explanation:

Solution:
To reach the 10th pole, the car need to travel 9 poles
9 poles 20 seconds
1 pole (20/9) seconds
To reach the last (50th) pole, the car needs to travel 49 poles.
49 pole 49 x (20/9) seconds = 108.88 sec.
Therefore,88.8 sec more time required to reach the last pole.