A man can reach a certain place in 30 hours. If the reduces his speed by`1/(15)t h` he goes 10 km less in that time. Find his speed. `4\ k m//h r` b. `5\ k m//h r` c. `5 1/2k m//h r` d. `6k m//h r`

A is faster than B. A and B each walk 24 km. the sum of their speeds is 7 km /hr and the sum of times taken by them is 14 hours. Then As speed is equal to 3k m//h r b. 4 k m//h r c. 5 k m//h r d. 7 k m//h r

A train is scheduled to cover the distance between two stations 46 km apart in one hour. If it travels 25 km at a speed of 40 km/hr, find the speed for the reaming journey to complete it in the scheduled time. 36 k m//h r b. 46 k m//h r c. 56 k m//h r d. 66 k m//h r

A man's speed with the current is 15 km / hr and the speed of the current is 2.5 km/ hr. The man's speed against the current is: 8. 5\ k m//h r b. \ 9\ k m//h r c. 10\ k m//h r d. 12. k m//h r

The speed of a boat in still water is 10 km /hr. If it can travel 26 km downstream and 14 km upstream in the same time, the speed of the stream is : 2 k m//h r b. 3 k m//h r c. 4 k m//h r d. 2. k m//h r

A journey of 192 km between two cities takes 2 hours less by a fast train than by a slow train. If the average speed of the slow train is 16 km/hr less than that of the fast train, then the average speed of the fast train is 32 k m//h r b. 48 k m//h r c. 36 k m//h r d. 64 k m//h r

Two trains start simultaneously (with uniform speeds) from two stations 270 km apart, each to the opposite station; they reach their destinations in 6 1/4 hours and 4 hours after they meet. The rate at which the slower train travels is 16 k m//h r b. 24 k m//h r c. 25 k m//h r d. 30 k m//h r