A car traveling at a uniform speed covers 240 km. If the speed had been 10 km/h more, it would have taken 1 hour less. Find the initial speed. MCQ with Answer and Explanation
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Question #1
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A drone flies at 25 m/s. Find its speed in km/h.
Correct Answer: Option A
Explanation:
To convert m/s to km/h, multiply by 18/5. Speed = 25 * (18/5) = 90 km/h.
To convert m/s to km/h, multiply by 18/5. Speed = 25 * (18/5) = 90 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A delivery boy on a scooter covers a distance of 24 km at a speed of 16 km/h. Find the time taken in minutes.
Correct Answer: Option C
Explanation:
Time taken = Distance / Speed = 24 / 16 = 1.5 hours. Converting to minutes = 1.5 * 60 = 90 minutes.
Time taken = Distance / Speed = 24 / 16 = 1.5 hours. Converting to minutes = 1.5 * 60 = 90 minutes.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A bicycle wheel has a radius of 28 cm. How many revolutions are mandatory to span a total course line of 880 meters?
Correct Answer: Option A
Explanation:
Circumference = 2 * (22/7) * 28 = 176 cm = 1.76 meters. Total course line = 880 meters. Number of revolutions = 880 / 1.76 = 500.
Circumference = 2 * (22/7) * 28 = 176 cm = 1.76 meters. Total course line = 880 meters. Number of revolutions = 880 / 1.76 = 500.
This question belongs to:
Maths
Time Speed and Distance
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