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Q2 A car travels first 320 kms of a journey at a speed of 32 kmph and the remaining 480 km at a speed of 12 kmph. Find the average sowed of the whole
Ops: A 27 kmph
в. 16 kmph
c 16.5 kmph
d 17.5 kmph
Answers
Answered by
3
Answer:
Correct option is
C
60 km/hr
Let the each half of the running time be t.
During first half time, speed of car is 80 km/h
Distance covered d
1
=80t km
During second half time, speed of car is 40 km/h
Distance covered d
2
=40t km
Total distance covered d=d
1
+d
2
=80t+40t=120t
Total time taken T=2t
Average speed v
avg
=
T
d
=
2t
120t
=60 km/hr
Option C is correct.
Step-by-step explanation:
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Answered by
2
Answer:
option B. 16kmph is the right answer
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