A thief is noticed by a policeman from a distance of 200 meters. The thief starts running and the policeman chases him. The thief and the policeman run at the rate of 10 km/h and 11 km/h respectively. What is the distance between them after 6 minutes? MCQ with Answer and Explanation
A thief is noticed by a policeman from a distance of 200 meters. The thief starts running and the policeman chases him. The thief and the policeman run at the rate of 10 km/h and 11 km/h respectively. What is the distance between them after 6 minutes?
Two marathoners run a long stretch. The winner finishes in 50 minutes while the second runner takes 55 minutes. By what percentage is the winner's speed higher than the runner-up's speed?
Explanation:
Since distance is constant, speed is inversely proportional to time. Ratio of times Winner:Runner-up = 50:55 = 10:11. Ratio of speeds Winner:Runner-up = 11:10. Speed excess percentage = ((11 - 10) / 10) * 100 = 10%.
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