A rides from his house at 12 noon towards B's house at a speed of 8 km/hour. After 1 hour, B rides from his house towards A's at a speed of 7 km/hour. If the distance between the two houses is 68 km, the time when they meet is

A rides from his house at 12 noon towards B's house at a speed of 8km/hour. After 1 hour,B rides from his house towards A's at a speed of 7km/hour. If the distance between the two houses is 68km, the time when they meet is

A boy went to his school at a speed of 12 km/hr and returned to his house at a speed of 8 km/hr. If he has taken 50 minutes for the whole journey, what was the total distance walked ?

A persons pedals from his house to his office at a speed of x_1 km/hour and returns by the same route at a speed of x_2 km/hour. What is his average speed?

A boy goes to his school from his house at a speed of 3 "km"//"hr" and returns at a speed of 2 "km"//"hr" . If he takes 5 hours in going and coming, the distance between his house and school is :

A student walks from his house at 6.30 am and reaches his school at 7:15 am. The distance of the school from his house is 6 km. The speed of the student is

A boy goes to school from his home at a speed of 4 km/hr and returns at a speed of 6km/hr . If in total he took 5 hours in going and coming back, the distance between his house and school ?

A person walks along a straight road from his house to a market 2.5kms away with a speed of 5 km/hr and instantly turns back and reaches his house with a speed of 7.5 kms/hr. The average speed of the person during the time interval 0 to 50 minutes is (in m/sec)