A speeding car travelling at the speed of 40 km per hour decides to slow down to 30 kilometre per hour after it has travel half the distance what is the average speed of the car.
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Answered by
0
Answer:
speed =distance/time
= 40/60
=4/6
=30/60
=1/2
average speed =4/6+1/2/2
4+3/6/2
7/6/2
7by2/6
14/6
23.33 ans
Answered by
0
Answer:
34.3 km/hr
Step-by-step explanation:
average speed = distance/time
If,
distance=2x
Then,
- time= x/40+x/30= 7x/120
Av speed,
- 2x/7x/120= 240/7= 34.3 km/hr
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