Places M and N are 90 km apart from each other on a national highway. A truck starts from M and another from N at the same time. If they go in the same direction, then they meet in 9 hours and if they go in opposite directions, they meet in `9/7` hours. The speed of the trucks are
O 90 km/hr, 40 km/hr
O 40 km/hr, 30 km/hr
O 20 km/hr, 60 km/hr
O 50 km/hr, 12 km/hr

Point A and B are 90km apart from each other on a highway.A car starts from A and another from B at the same time.If they go in the same direction they meet in 9 hours and if they go in opposite directions they meet in 9/7 hours. Find their speeds.

If a person travels 60km in 4 hours in a car, then the speed of the car is 12km/hr (b) 15km/hr20km/hr(d)24km/hr

A train leaves from a station and moves at 40 km/hr. After 2 hours, another train leaves from the same station and moves in the same direction at a certain speed. If the second train catches up with the first train in 4 hours, what is the speed of the second train? Options are (a) 55 km/hr (b) 50 km/hr (c) 60 km/hr (d) 65 km/hr .

The upstream speed of the boat is 40 km/hr and the speed of the boat in still water is 55 km/hr. What is the downstream speed of the boat ? A. 75 km/hr B. 70 km/hr C. 60 km/hr D. 65 km/hr

A 150m long train crosses a pillar in 15 seconds and a train equal in length coming from its opposite direction in 12 seconds.The speed of the second train is: a.) 45km/hr b.) 48km/hr c.) 52km/hr d.) 54km/hr

The ratio between the speeds of two buses is 11:9. If the second bus runs 270 km in 15 hours, what is the speed of the first bus? A. 23 km / hr B. 11 km / hr C. 2 km / hr D. 22 km / hr

Two sea trawlers left a sea port simultaneously in two mutually perpendicular directions. Half an hour later, the shortest distance between them was 17 kin, and another 15 minutes later, one sea trawler was 10.5 km farther from the origin than the other. Find the speed of each sea trawler. a. 16 km/hr, 30 km/hr b. 18 km/hr 24 km/hr c. 20 km/hr, 22 km/hr d. 18 km/hr, 36 km/hr