A 37) A body travels one third of distance with 10 km/hr, another one third with 20 km/hr and remaining one third with 60 km/hr then average speed is a) 12 km/hr b) 16 km/hr c) 18 km/hr d) 32 km/hr
Answers
Answered by
0
Answer:
18 km/hr
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
Answered by
0
Answer:
78km
Explanation:
i really do notvthevcompartmentalisation's
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