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Questions(147)
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If the front and back wheel of a vehicle is of perimeters 7 foot and 9 foot respectively , find the distance travelled by the vehicle such that the front wheel has made 10 revolutions more than the back wheel..
A train was late by 6 minutes. The driver increased its speed by 4 km/hr. At the next station, 36 km away, the train reached on time. Find the original seed of the train.
(1) 36 km/hr (2) 48 km/hr รง3) 32 km/hr (4) 45 km/hr (5) None
A man is 20 mins late to the office if he walks at 20 kmph, and 15 mins earlier if he walks at 30 kmph. How much time will he be early/late if he walks at 25 kmph?
A & B two places. C & D are two people. C started from A and D started from B. When they meet each other in the way C traveled 18 m more than D. Then C takes 13 and half a minute and D takes 24 minutes to reach the other end. What was the distance between A & B.
When not moving on the sidewalk, Maya can walk the length of the sidewalk in 7 minutes. If she stands on the sidewalk as it moves, she can travel the length in 4 minutes. If Maya walks on the sidewalk as it moves, how many minutes will it take her to travel the same distance? Assume she always walks at the same speed, and express your answer as a decimal to the nearest tenth. (a) 3.6 (b) 2.5 (c) 3.8 (d) 2.8
An Engine length 1000 m moving at 10 m/s. A bird is flying from engine to end with $x$ kmph and coming back at $2x$. Take total time of bird traveling as 187.5 s. Find $x$ and $2x$
Three men start together to travel the same way around a circular track of $11$ km. Their speeds are $4,5.5$ and $8$ km/hr respectively. When will they meet at the starting point for the first time?
a) After $11$ hours
b) After $21$ hours
c) After $22$ hours
d) After $33$ hours