Unitary Method ...

Bunty can walk 5000 feet in 20 minutes.Walking at the same rate, how many feet can she walk in 10 seconds?

Two trains running in opposite directionsat 35 km/h and 37 km/h cross each otherin 10 seconds. If one train is 100 m long, the length ofthe other train is:

A man rows to a place 30 km distant and comeback in 10 hours. He finds that he can row 3 km with the stream in the sametime as 2km against the stream. The rate of the stream is:

Ifthe speed of the train is 70.4 km/h , how much distance would be covered by itin 40 minutes?

David drives half the distancefrom A to B at 30 miles per hour and the otherhalf of the distance at 50 miles per hour. Calculate her average rateof speed, in miles per hour, for the entire trip.

A train speeding at 120 km/hr crosses an electric pole in 9 seconds and a platform in 24 seconds. What is the length of the platform?

Train A leaves Ludhiana for Delhi at 11 amrunning at a speed of 50 km/hr. Train B leaves Ludhiana for Delhi by the sameroute at 2 pm on the same day, running at a speed of 62 km/hr. At what timewill the two trains meet each other?

A car traveling at an average rate of 40 kilometresper hour made a trip in 4 hours. If it had travelled at an averagespeed of 80 kilometres per hour, how many minutes less would the triphave taken?

What is the length of the bridge which a manriding 20 km an hour can cross in 10 minutes?

A boat can travel with a speed of 15 km/hr instill water. If the speed of the stream is 2 km/hr, find the time taken by theboat to go 85 km downstream.

“The gravitational force exerted on an object due toacceleration of gravity is called weight”. Is this statement true?

Sameer takes 40 minutes from his house to reachhis office on a bicycle. If the bicycle as a speed of 4 m/s, calculate the distance between his houseand the office.

Two trains with their speeds in theratio 2:6 are going in opposite directions along parallel tracks. Ifeach takes 2 seconds to cross a telegraph post, then the time takenby the trains to cross each other completely will be

What distance (in m) will a train cover in 1-minutetraveling at 54 km/hr?

A man covers a journey by car in 2 hours.He covers a distance of 54 km 300 m during the firsthour, 48 km 46 m during the second hour and 50 km 6 m duringthe third hour. What is the length of his journey?