a car in moving on a stright road and cover 1/3rd distance with 20 km/hr and remaining 2/3rd distance with the speed of 60 km/hr, find average speed?
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Answer:
36 km /h
Step-by-step explanation:
Let total distance =x
Velocity 1 = 20 km/h
Distance 1= x/3
Time 1 = x/3 ÷ 20= x/60
V2 = 60 km / h
D 2= 2/3 of x
T2 = 2/3 of x ÷ 60 =x by 90
Avg speed = total distance upon total time
Avg= x × 180 /5 =36 km/h answer
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