There is a circular track of the length 440 m. There are three persons A, B and C standing at different points on the track ready to start the race. A and B are standing diametrically opposite to each other while C is exactly mid-way between A and B, such that A, C and B are standing in clockwise order. The race starts at 10.00 a.m. The speeds of A, B and C are, respectively, 5 m/s, 10 m/s and 8 m/s.At what time would B and C meet for the second time, if all the three of them run in the clockwise direction?
Due to torrential rains a Kolkata suburban train covers only 1/6th of the distance in 1/4th of its stipulated time. To reach the destination in time the driver should increase the speed to what times of its original speed ?
A and B are running towards each other at the speed of 20 kmph and 10 kmph respectively. When they are 150 km apart, A reverses direction and halves his speed and every half an hour he repeats this while B continues travelling in the same direction. Find the distance between them after B has reached the point from which A had started reducing his speed.
Amitabh covered a distance of 96 km two hours faster than he had planned to, this he achieved by travelling 1km more every hour than he intended to cover every 1hour 15 minutes what was the speed at which Amitabh travelled during the journey?
Amitabh covered a distance of 96 km two hours faster than he had planned to, this he achieved by travelling 1km more every hour than he intended to cover every 1hour 15 minutes what was the speed at which Amitabh travelled during the journey?
Amitabh covered a distance of 96 km two hours faster than he had planned to, this he achieved by travelling 1km more every hour than he intended to cover every 1hour 15 minutes what was the speed at which Amitabh travelled during the journey?
The distance of P from Q is 7 km. An aeroplane flew from P to Q against the wind and then come back in 22 minutes. If its speed was decreased by 25/2 flying against the wind and increased by 5% when flying with the wind, how long would the flight have taken, had there been no wind?
A student got down at a tram-stop A and walked the remaining distance to school. If he had stayed in the tram until the next stop B and then walked to school he would have taken a minute less. If he had walked the entire distance from A to school at twice his usual speed, he would have taken as much time as the tram would take for traveling from A to B. If the school is 300 m from A, and 100 m from B, the walking speed of the student is
distance between x to y is 100m, 5 stones are kept at 0m, 2m, 4m, 6m, 8m distance from x. Calculate minimum distance to take all stones to y one at a time?
a,b,c are the lengths of the sides of the triangle ABC; d,e,f are the lengths of the sides of trngle DEF If a(a+b+c)= d^2 b( ab+c)= e^2 c(a+b+c) = f^2...then triangle DEF is acute /obtuse/ right angled ?