How long must a driver take to drive the final 70 miles of a trip if he wants to average 50 miles an hour for the entire trip and during the first part of the trip he drove 50 miles in `1 1/2` hours? `54\ m in` b. `\ 1\ hou r` c. `66\ m in` d. `7\ m in`

A train travels at an average speed of 50 miles per hour. It travels for 2 1/2 hours.

A train travel at an average of 50 mile per hour for 2 1/2 hours and then travels to a speed of 70 miles per hour for 1 1/2 hors. How far did the train travel in the entire 4 hours? 120 m i l e s b. 200 m i l e s c. 10 m i l e s d. 230 m i l e s

A man can swim in still water t a rate of 4 km/hr. The width of the river is 1 km. how long will he take to cross the river straight, if the speed of the current is 3 km/hr? 10 m in b. 20 m in c. 15 m in d. 18 m in

At his usual rowing rate, Rahul can travel 12 miles downstream in a certain river in 6 hours less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for his 24-mile round trip, the downstream 12 miles would then take only one hour less than the upstream 12 miles. What is the speed of the current in miles per hours? 1 1/3 b. 1 2/3 c. 2 1/3 d. 2 2/3

Mac travels from A to B a distance of 250 miles in 5 1/2 hours. He returns to A in 4 hours 30 minutes. His average speed is:

The train travelling at a speed of 75 mph enters a tunnel 3 1/2 mile long. The train is 1/4 mile long. How long does it take for the train to pass through the tunnel from the moment the front enters to the moment the rear emerges? 2. 5 m in b. 3 m in c. 3. 5 m in d. 3. 2 m in

Kiran needs to travel 300 km in 5 hours. He travels for some "@"75 km/hr and the rest of the time "@"55 km/hr, how long did Kiran travel at the higher speed? A)1 hour 10 mins B)1 hour 35 mins C)1 hour 15 mins D) 1 hour 25 mins

A salesman travels a distance of 50 km in 2 hours and 30 minutes. How much faster, in kilometres per hour, on an average, must he travel to make such a trip in 5 /6 hour less time?

A man drives 150km to the seashore in 3 hours 20 min.He returns from the shore to the starting point in 4 hours 10 min.let rbe the average rate for the entire trip.Then the average rate for the trip going exceeds r in kilometres per hour by 2 b.4 c.4(1)/(2) d.5

A boat,while going downstream in a river covered a distance of 50 miles at an average speed of 60 miles per hour.While returning, because of the water resistance,it took 1 hour 15 minutes to cover the same distance.What was the average speed during the whole journey? 40backslash mph b.48backslash mph c.50backslash mph d.55backslash mph