A truck travels 450 meters in 30 seconds. Find its speed in km/h. MCQ with Answer and Explanation

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A truck travels 450 meters in 30 seconds. Find its speed in km/h.

A. 54 km/h

B. 48 km/h

C. 66 km/h

D. 60 km/h

Answer: Option A

Solution (By JKSSB Mock Tests)

Speed = 450 / 30 = 15 m/s. In km/h = 15 * (18/5) = 54 km/h.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A professional athlete tracks a loop of radius 140 meters in 88 seconds. What is his speed in km/h?

A. 40 km/h

B. 44 km/h

C. 36 km/h

D. 32 km/h

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Correct Answer: Option C

Explanation:
Circumference of loop = 2 * (22/7) * 140 = 880 meters. Speed = 880 / 88 = 10 m/s. Converting to km/h = 10 * (18/5) = 36 km/h.

This question belongs to: Maths Time Speed and Distance

Question #2

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A person walks from his residence to his office at 4 km/h and arrives 15 minutes late. If he increases his speed to 6 km/h, he still arrives 5 minutes late. Find the distance.

A. 2 km

B. 2.5 km

C. 1.5 km

D. 3 km

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Correct Answer: Option A

Explanation:
Time difference = 15 - 5 = 10 minutes = 10 / 60 = 1/6 hour. Let distance be d. d/4 - d/6 = 1/6 => d/12 = 1/6 => d = 2 km.

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Question #3

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A high-speed train travels at 162 km/h. How many meters does it cover in exactly 8 seconds?

A. 360 meters

B. 320 meters

C. 380 meters

D. 400 meters

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Correct Answer: Option A

Explanation:
Speed in m/s = 162 * (5/18) = 9 * 5 = 45 m/s. Distance covered in 8 seconds = 45 * 8 = 360 meters.

This question belongs to: Maths Time Speed and Distance

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