The ratio of the speeds of three cars is 5:7:8. What is the ratio of time taken by these cars to travel…
For the same distance, time is inversely proportional to speed. The time ratio is therefore 1/5:1/7:1/8; multiplying by 280 converts it to 56:40:35.
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The ratio of the speeds of three cars is 5:7:8. What is the ratio of time taken by these cars to travel a certain distance?
Answer and explanation
Correct answer A
For the same distance, time is inversely proportional to speed. The time ratio is therefore 1/5:1/7:1/8; multiplying by 280 converts it to 56:40:35.
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Jammu & Kashmir Prosecuting Officer