A car moving on a straight road covers one third of the distance with 20 km/hr and the rest with 60 km/hr. The average speed is
A
40 km/hr
B
80 km/hr
C
D
36 km/hr
Text Solution
Verified by ExpertsThe correct answer is:
D
Let total distance travelled = x and total time taken t 1 + t 2 
∴ ∴ Average speed 
= 
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