A car travels at a uniform speed of 30 kmph for 30 minutes and then at a uniform speed of 40 kmph for the next 40 min. Calculate the total distance travelled speed. by car and its average
Answers
Answered by
1
Answer:
The total time for the journey is given as,
t=
v
1
d
1
+
v
2
d
2
=
40
30
+
20
30
=2.25hour
The average speed is given as,
v
avg
=
t
d
1
+d
2
=
2.25
30+30
=26.67km/h
Thus, the average speed of the car is 26.67km/h.
Answered by
3
Answer:
Answer:
1st case:
speed =30km/hr
time = 30 min.
= 30/60
=1/2
speed=distance/time
30=distance/1/2
30=distance×2
30/2= distance
15km=distance
2nd case:
speed = 40km/hr
time = 40min.
= 40/60
=2/3
speed = distance/time
40=distance/2/3
40= 3×distance/2
40×2= 3× distance
80= 3× distance
80/3 = distance
distance= 26.67km
total distance =( 15+26.67)km
=41.67km
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