A man travels for 3 hours at a speed of 40 km/h and 4.5 hours at a speed of 60 km/h. Then, he finds that 60% of the total distance is covered. At what average speed (km/h should he cover the remaining distance in \(3 \frac{1}{4}\) hours?

A man travels for 3 hours at a speed of 40 km/h and 4.5 hours at a spe

1.	A man travels for 3 hours at a speed of 40 km/h and 4.5 hours at a speed of 60 km/h. Then, he finds that 60% of the total distance is covered. At what average speed (km/h should he cover the remaining distance in \(3 \frac{1}{4}\) hours?
A.	84
B.	75
C.	72
D.	80
Answer» E.

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A man travels for 3 hours at a speed of 40 km/h and 4.5 hours at a speed of 60 km/h. Then, he finds that 60% of the total distance is covered. At what average speed (km/h should he cover the remaining distance in \(3 \frac{1}{4}\) hours?

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