Question

1.)A person crosses a 600 m long street in 5 minutes.What is his speed in km per hour.

2.)If a person walks at a 14km per hour instead of 10 km/hr.He would have walked 20 km more.The actual distance travelled by him.

3.)Excluding stoppage,the speed of a bus is 54km/hr an including stoppage it is 45 km/hr.For how many minutes does the bus stop per hour.

4.)A man complete a journey in 10hours.He travels first half of the journey at the rate of 21km/hr,and second half at the rate of 24km/hr.Find the total journey in km.

5.)A man on tour travels first 160km at 64km/hr and the next 160km at 80km/hr. Find the average speed of 320km of journey.

6.)A car travelling with 5/7 of its actual speed cover 42 km in 1hr 40min 48sec.Find the actual speed of car.

Answer 1

Answer:

7.143 km/hr

Step-by-step explanation:

ans 1) Distance covered by person, d= 600m =0.6km

         Time taken, t=5min =0.0833.......hr ≈0.084hr

speed = d/t = 0.6/0.084 =7.142........ ≈ 7.143km/hr