Shalu cycles to her school at an average speed of 12 km/hr. It takes her 20 minutes to reach the school. If she wants to reach her school in 15 minutes, what should be her average speed?

Ajay takes 22.5 minutes to reach Geeta's house if he drives at an average speed of 40km/hr. Geeta takes 15 minutes to reach Ajay's house. Find the distance between the houses of Ajay and Geeta. Also, find Geeta's average speed.

A cyclist is moving at a speed of 20 km/h for 20 minutes. By how much should he increase his speed if he needs to cover the same distance in 15 minutes?

One day a boy walked from his house to his school at the speed of 4 km/hr and he reached ten minutes late to the school. Next day, he ran at the speed of 8 km/hr and was 5 minutes early to the school. Find the distance between his house and school.

A car is driven at an average speed of 30 km/hr for 15 minutes. At what speed should the car be driven, if the same distance is to be covered in 18 minutes?

Priya is driving at an average speed of 60 km/hr. She reaches her friend's house in 20 minutes. On her way back, she takes 30 minutes to reach home. Find her average speed on her return journey.

Priti drives at an average speed of 80 km/h and reaches the post office from her house in 6 minutes. On her way back, Priti reaches her house in 4 minutes 48 seconds. Find the distance between Priti's house and the post office and also Priti's average speed on the return journey.

A train travels at a certain average speed for a distance of 63km and then travels a distance of 72km at an average speed of 6 km/hr more than its original speed. If it takes 3 hours to complete the total journey, what is its original average speed?

A train travels at a certain average speed for a distance of 63km and then travels a distance of 72km at an average speed of 6 km/hr more than its original speed. If it takes 3 hours to complete the total journey, what is its original average speed?

Geeta is going on her moped at a speed of 24 km/hr. How much time will she take to cover 540 metres ?