A person walking at 4/5 of his usual speed reaches his shop 15 minutes late. What is his usual time to reach the shop? MCQ with Answer and Explanation
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Question #1
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A wheel makes 1000 revolutions to cover a distance of 880 meters. Find the diameter of the wheel.
Correct Answer: Option D
Explanation:
Distance covered in 1 revolution = 880 / 1000 = 0.88 meters = 88 cm. Circumference = 2 * (22/7) * r = 88 cm => (44/7) * r = 88 => r = 14 cm. Diameter = 2r = 28 cm.
Distance covered in 1 revolution = 880 / 1000 = 0.88 meters = 88 cm. Circumference = 2 * (22/7) * r = 88 cm => (44/7) * r = 88 => r = 14 cm. Diameter = 2r = 28 cm.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A slow moving truck covers a distance of 210 km at a uniform speed of 35 km/h. How much time does it take?
Correct Answer: Option C
Explanation:
Time taken = Distance / Speed = 210 / 35 = 6 hours.
Time taken = Distance / Speed = 210 / 35 = 6 hours.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A crew row a boat 24 km upstream and 36 km downstream, taking 4 hours for each separate direction. Find the speed of the current stream.
Correct Answer: Option C
Explanation:
Upstream speed = 24 / 4 = 6 km/h. Downstream speed = 36 / 4 = 9 km/h. Current speed = (Downstream speed - Upstream speed) / 2 = (9 - 6) / 2 = 1.5 km/h.
Upstream speed = 24 / 4 = 6 km/h. Downstream speed = 36 / 4 = 9 km/h. Current speed = (Downstream speed - Upstream speed) / 2 = (9 - 6) / 2 = 1.5 km/h.
This question belongs to:
Maths
Time Speed and Distance
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