Question

10. A car travels 150 km in 5 hours. Find out:
(a) how much time is required to cover 40 km with the same speed?
(b) the distance covered in 8 hours with the same speed​

Answer 1

Answer:

a) 1 hr 20 minutes

b) 240 km

Step-by-step explanation:

Definition of speed :

Speed is defined as total distance covered per unit time.

Speed of the car = Distance / Time

=> Speed of the car = 150 km / 5 hours

Hence Speed of the car = 30 km/h

a) Time = Distance / Speed

=> Time = 40 km / 30 kmph

=> Time = 4/3 hours

Hence time = 80 minutes or 1 Hr 20 minutes.

b) Distance = Speed × Time

=> Distance = 30 km/h × 8 h

=> Distance = 240 km.

Thanks !

Answer 2

Answer:

a) 1 hr 20 min

Step-by-step explanation:

150 /60 is= 30 km per hour

therefore 60 / 30 = 2 min per km

40*2 = 80 = 1 hr 20 min

B) use the same here

30 km per HR

= 30*8= 150 = 2 hr 30 min