An officer walks to his workplace at 4 km/h and arrives 12 minutes late. If he scales up his speed to 5 km/h, he arrives 6 minutes early. Find the distance to his office. MCQ with Answer and Explanation
An officer walks to his workplace at 4 km/h and arrives 12 minutes late. If he scales up his speed to 5 km/h, he arrives 6 minutes early. Find the distance to his office.
A. 5 km
B. 7 km
C. 6 km
D. 8 km
Answer: Option C
Solution (By JKSSB Mock Tests)
Time difference = 12 - (-6) = 18 minutes = 18/60 = 3/10 hours. Let distance be d. d/4 - d/5 = 3/10 => d/20 = 3/10 => d = 6 km.
A dog sees a cat at a distance of 150 meters. The cat starts running at 12 km/h and the dog chases it at 15 km/h. How much distance will the cat cover before being caught?
A man covers 1/3rd of his journey at 20 km/h and the remaining 2/3rd at 40 km/h. If the total distance is 120 km, find the total time taken for the journey.
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