Question

6. A car travels first 30 km with a uniform speed of
60 km h- and then next 30 km with a uniform speed
of 40 km h-. Calculate : (i) the total time of journey,
(ii) the average speed of the car.​

Answer 1

Answer:

heya here is the answer

Step-by-step explanation:

The car travels for first 30km at a speed of 60kmh

S=D/T

T=D/S

T=30/60=0.5hr or 1/2 hr

The car travels the next 30km with speed

40

thus T=30/40=3/4 HR

TOTAL TIME=1/2+3/4=5/4 hrs

now AVG speed =60km/5/4=4 X 60/5=48Kmph

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Answer 2

Step-by-step explanation:

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