Walking at 5/6 of his baseline typical speed, a courier agent reaches his office terminal 15 minutes late. Find his typical baseline time parameter. MCQ with Answer and Explanation
Walking at 5/6 of his baseline typical speed, a courier agent reaches his office terminal 15 minutes late. Find his typical baseline time parameter.
A. 80 minutes
B. 70 minutes
C. 85 minutes
D. 75 minutes
Answer: Option D
Solution (By JKSSB Mock Tests)
New speed = 5/6 of usual speed => New time = 6/5 of usual time. Difference = 1/5 of usual time = 15 minutes. Typical baseline time parameter = 15 * 5 = 75 minutes.
A motorboat rows 24 km downstream in 3 hours and tracks the identical route upstream back to the jetty point in 4 hours. Find the net speed index of the current stream flow.
Excluding minor platform corridor stops, the speed of an express route train is 84 km/h, and including stops it tracks at 70 km/h. How many minutes does it spend resting at stops per hour?
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