A ship A which is at distance of 30km to the north of P moves at 15 km/hr and another ship B which is at a distance of 40 km to the east of P moves at 20 km/hr. How fast the distance between the cars changing?

A road running north to south acrosses a road going east to west at the point P. Car A is driving north along the first road, and car B is driving east along the second road . At a particular time car A 10 kilometers to the north of P and traveling at 80 km//hr , while car B is 15 Kilometers to the east of P and traveling at 100 km//hr . How fast is the distance between the two cars changing ?

A car covers a distance of 80 km at a speed of 60 km/hr and another 140 km at a speed of 70 km/hr Find the average speed of the journey

A car covers a distance of 80 km at a speed of 60 km/hr and another 140 km at a speed of 70 km/hr. What is the average speed of the journey ?

At a particular instant ship A is 100 km west of ship B, ship A is sailing at a speed of 35 km/hr and ship B is sailing north at 25 km/hr. How fast is the distance between the ships changes after 4 hours

Two ships A and B are sailing away from a point O along routes such that angle AOB is always 120^(@) . At a certain instance, OA = 8 KM OB = 6km and the ship A is sailing at the rate of 20 km/hr while the ship B sailing at the rate of 30km/hr while the ship B sailing at the rate of 30 km/hr. Then the distance between A and B is changing at the rate (in km/hr)

A truck covers a distance of 330 km at the speed of 30km/hr . What is the average speed of a car which travels a distance of 110 km more than the truck in the same time ?

If a body covers a distance at the rate of x km/hr and another distance at the rate of y km/hr, then the average speed in km/hr is:

A train starts from station A and reaches B 15 minutes late when it moves with 40 km/hr and 24 minutes late when it goes 30 km/hr. The distance between the two stations is