A person travels from P to Q at a speed of 40 kmph and returns to Q by increasing his speed by 50%. What is his average speed for both the trips ?
A car covers a distance of 525 km. in a certain time at a speed of 66 km./hr. How much distance would a truck cover at an average speed which is 24 km hr. less than that of the speed of the car in time which is 7 hours more than that taken by the car ?
A 320 metre long train crosses a pole in 50 seconds. What is the speed of train ?
Philip, Tom and Brad start jogging around a circular field and complete a single round in 18, 22 and 30 seconds respectively. In how much time will they meet again at the starting point ?
Amit, Sucheta and Neeti start running around a circular track and complete one round in 18, 24 and 32 seconds respectively. In how many seconds will the three meet again at the starting point. if they all have started running at the same time ?
The average speed of a train is 1 $\frac{3}{7}$ times the average speed of a car. The car covers a distance of 588 km in 6 hours. How much distance will the train cover in 13 hours ?
A 280 metre long train moving with an average speed of 108 km/hr crosses a platform in 12 seconds. A man crosses the same platform in 10 seconds. What is the speed of the man in metre/ second ?
