a truck travels distance of 130 km at the speed of 18km/hr, and another 50km at the speed of 20km/hr. what is the average speed of the truck during the whole journey.
with explanation
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Answer:
48 kmh
Explanation:
Total distance covered by car = 60 km
And, total time taken in journey t=t
1
+t
2
t=
v
1
s
1
+
v
2
s
2
=
60
30
+
40
30
=
4
5
h
Therefore, Average Speed=
Total Time
Total Distance
=
4
5
h
60km
=48 km/h
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