Excluding stoppages, a transit truck travels at 75 km/h and including stoppages it travels at 62.5 km/h. How many minutes does the truck stop per hour? MCQ with Answer and Explanation
Excluding stoppages, a transit truck travels at 75 km/h and including stoppages it travels at 62.5 km/h. How many minutes does the truck stop per hour?
A. 10 minutes
B. 15 minutes
C. 12 minutes
D. 8 minutes
Answer: Option A
Solution (By JKSSB Mock Tests)
Stoppage time per hour = (75 - 62.5) / 75 = 12.5 / 75 = 1/6 hour. In minutes = (1/6) * 60 = 10 minutes.
A boat crew row a boat 24 km downstream in 3 hours and tracks the identical loop back upstream in 6 hours. Find the baseline speed of the boat in still water.
A worker handles a total factory delivery run of 160 km. He maps the first 60 km section at 30 km/h and the final 100 km segment section at 50 km/h. Find the mean average speed recorded across the full delivery run.
Explanation:
Total distance = 160 km. Time for section 1 = 60 / 30 = 2 hours. Time for section 2 = 100 / 50 = 2 hours. Total duration time = 4 hours. Average speed across run = 160 / 4 = 40 km/h.
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