Question : The ratio of time taken by A and B to cover a certain distance is 17 : 19. Find the ratio of their respective speed.
Option 1: 11 : 15
Option 2: 15 : 19
Option 3: 17 : 15
Option 4: 19 : 17
Correct Answer: 19 : 17
Solution :
Given: The ratio of time taken by A and B to cover a certain distance is 17 : 19.
The ratio of their speeds will be the reciprocal of the time ratio.
Thus, the ratio of the speeds of A and B = $\frac{1}{17} : \frac{1}{19} = 19 : 17$
Hence, the correct answer is 19 : 17.
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