Question

Exercise 11
1. A motorist travelled at a speed of 70 km/hr. At this speed how far could he travel in 7 hours.
2. Find the time taken by a bus to travel 280 km at a speed of 80 km/hr.
3. Express the following speeds in km/hr.
(1) 12 m/s (ii) 20 m/s
(iii) 270 m in 12 sec (iv) 200 m in 36 sec
2
4. Express the following speeds in m/s (metres per second).
(i) 60 km/hr
(11) 90 km/hr (iii) 12.6 km/hr
5. A car moves at a speed of 54 km/hr. What is the speed of the car in metres per second?
6. An athlete runs a 200 metres race in 24 seconds. What is his speed in km/hr?
7. An aeroplane travelled 4320 km in 6 hr. Find its speed in () km/hr (ii) m/s.
8. The distance between two cities i$ 380 km. A train takes 6 hours 40 minutes to cover the distance. Find
the speed of the train.
9. A tourist bus left town A and travelled at an average speed of 85 km/hr to town B which was 340 km
away. If it reached town B at 1:15 p.m., at what time did it start?
10. A motorist travelled a distance of 150 km at a speed of 60 km/hr. He left at 11:30 a.m. and stopped for
45 min on the way. At what time did he reach his destination.
11. Shyam and Ankur both use cars to go to their offices. Shyam covers a distance of 16 km in 30 minutes
while Ankur covers a distance of 12 km in 20 minutes. Which of the two drives faster?
12. Lily drove from Town X to Town Y at an average speed of 78 km/hr. After 1= hours, she completed
11
of her journey. What is the distance between Town X and Town Y?​

Answer 1

Answer:

1.490km

2.3  1/2hrs

3i 43  1/5km/hr

ii72km/hr

iii81km/hr

iv20km/hr

Step-by-step explanation: