A car travelled at an average speed of 90 km/h for 2 hours. It then travelled at an average speed of 100 km/h for another half an hour. What was the total distance covered in 2½ hours ?
Answers
Answered by
0
Answer:
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
Answered by
0
Answer:
475 km
Step-by-step explanation:
The Speed is added
100+90=190
the time is added
2+1/2=2.50
Distance=v * t
d=190*2.50
d=475 km
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