Number System
Quick practice
Question 1 of 5
One third of a 2400 km journey is covered at the rate of 25km/hour, one-fourth at the rate of 30 km/hr and the rest of 50 km/hr. The average speed for the whole journey is:
A
33⅓ Km/hr
B
30 Km/hr
C
28 4/7 Km/hr
D
28 Km/hr
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