A scootorist covers every one third of the total
distance at 10 km/hour, 20 km/hour and
60 km/hour respectively, His average speed is -
(1) 30 km/h
(2) 90 km/h
(3) 36 km/h
(4) 18 km/h
Answers
Answered by
0
Answer:
Let the total distance travelled be x km Then total time taken =
10
x/3
+
20
x/3
+
60
x/3
=
30
x
+
60
x
+
180
x
=
180
6x+3x+x
=
180
10x
=
18
x
hrs Then average speed = =
Totaltimetaken
Totaldistancetravelled
=
x/18
x
km/hr = 18 km/hr
Explanation:
Answered by
0
Answer:hen average speed =
2×30×70/30+70
=42km/hr
So required distance traveled in 10 hours =42×10=420 km
Explanation:
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