A man travelled the first part of his journey at 160 km/h and the second part at 240 km/h, and covered a total distance of 3840 km to his direction in 20 hours. How long, in hours, did the second part of his journey last?

A man travelled the first part of his journey at 160 km/h and the seco

1.	A man travelled the first part of his journey at 160 km/h and the second part at 240 km/h, and covered a total distance of 3840 km to his direction in 20 hours. How long, in hours, did the second part of his journey last?
A.	8
B.	10
C.	12
D.	15
Answer» B. 10

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A man travelled the first part of his journey at 160 km/h and the second part at 240 km/h, and covered a total distance of 3840 km to his direction in 20 hours. How long, in hours, did the second part of his journey last?

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