Two cyclists start on a circular track from a given point but in opposite directions with speeds of 7 m/ sec and 8 m/sec respectively. If the circumference of the circle is 300 metres, after what time will they meet at the starting point? `20\ s e c` b. `100\ s e c` c. `200\ s e c` d. `300\ s e c`

Two trains A and B start running together from the same point in the same direction, at the speeds of 60 kmph and 72 kmph respectively. if the length of each of the trains is 240 metres,, how long will it take for train B to cross train A? 1min2 s e c s b. 1min24 s e c c. 2min12 s e c s d. 2min24 s e c s

A, B and C are running on a circular track of radius 63 m. B and C run in the opposite direction of A. If the speed of A, B and C is 30, 25 and 14 m/minutes respectively then find when will they meet together first time and when will they together meet at the starting point?

Two trains of lengths 120 m and 90 m are running with speeds of 80 km/hr and 55 km/hr respectively towards each other on parallel lines. lf they are 90 m apart, after how many seconds they will cross each other? 5. 6 s e c b. 7. 2 s e c c. 8 s e c d. 9 s e c

Two identical trains A and B running in opposite directions at same speed take 2 minutes to cross each other completely. The number of bogies of A are increased from 12 to 16. How much more time would they now require to cross each other? 20 s e c b. 40 s e c c. 50 s e c d. 60 s e c

A .B and C start walking around a circular track.A completes one round in 91/6 seconds B completed in 65/4 sec and C completes in 56/3 sec respectively after how many sec will they meet each other at the starting point again?

A, B and C start running on a circular track simultaneously from the same place of the circular track at the speed of 30 m/s, 60 m/s and 40 m/s respectively in the same direction. The circumference of the track is 1200 m. (i) When will they be together again for the first time ? (ii) When will they be together again for the first time at the starting point?

P and Q start running on the circular track in opposite directions they starts from a point A and meet for the first second and third time at B,C and A respectively. what is the ratio of speeds of P and Q?

Two trains 200 metres and 150 metres long are running on parallel rails in the same direction at speeds of 40 km/hr and 45 km/hr respectively. Time taken by the faster train to cross the slowed train will be 72 s e con d s b. 132 s e con d s c. 192 s e con d s d. 252 s e con d s

Two pipes AS and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank? 10min20 s e c b. 11min45 s e c c. 12min30 s e c d. 14min40 s e c