A train passes a static observer in 6 seconds and a platform 160 meters long in 14 seconds. Find the length of the train. MCQ with Answer and Explanation

Question

A train passes a static observer in 6 seconds and a platform 160 meters long in 14 seconds. Find the length of the train.

A. 140 meters

B. 120 meters

C. 100 meters

D. 150 meters

Answer: Option B

Solution (By JKSSB Mock Tests)

Time to cross the platform distance alone = 14 - 6 = 8 seconds. Speed of train = 160 / 8 = 20 m/s. Length of train = Speed * Time to pass observer = 20 * 6 = 120 meters.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A cargo container vehicle spans 600 meters in exactly 40 seconds. Find its baseline speed index in km/h.

A. 48 km/h

B. 54 km/h

C. 60 km/h

D. 66 km/h

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Correct Answer: Option B

Explanation:
Speed = 600 / 40 = 15 m/s. In km/h index = 15 * (18/5) = 54 km/h.

This question belongs to: Maths Time Speed and Distance

Question #2

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A car covers a distance of 180 km at 45 km/h and another 180 km at 60 km/h. Find the total time spent during the journey.

A. 8.0 hours

B. 6.5 hours

C. 7.0 hours

D. 7.5 hours

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Correct Answer: Option C

Explanation:
Time for first part = 180 / 45 = 4 hours. Time for second part = 180 / 60 = 3 hours. Total time taken = 4 + 3 = 7 hours.

This question belongs to: Maths Time Speed and Distance

Question #3

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A private van tracks at 40 km/h for 4 hours and then steps up to 60 km/h for the next 2 hours. Find the mean average speed.

A. 45.33 km/h

B. 50.00 km/h

C. 48.00 km/h

D. 46.66 km/h

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Correct Answer: Option D

Explanation:
Distance 1 = 40 * 4 = 160 km. Distance 2 = 60 * 2 = 120 km. Total distance = 280 km. Total time = 6 hours. Average speed = 280 / 6 = 46.66 km/h.

This question belongs to: Maths Time Speed and Distance

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