A boy travels from A to B with a constant speed 10kmph and then from B to A with a
speed of 20 kmph. Find the average speed of the boy for this trip.
A borih
met olma: 11
1
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Answer:
Average Speed=
Total time
Total distance
=
20
X
+
30
X
X+X
=
30+20
2×30×20
=24 km/h
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