A man travelled a distance of 61 km. in 9 hours, partly by walking at the speed of 4 km./hr. and partly on bicycle at the speed of 9 km./hr. The distance covered by walking is

A man travelled a distance of 61 km. in 9 hours, partly by walking at

1.	A man travelled a distance of 61 km. in 9 hours, partly by walking at the speed of 4 km./hr. and partly on bicycle at the speed of 9 km./hr. The distance covered by walking is
A.	16 km.
B.	12 km.
C.	15 km.
D.	17 km.
Answer» B. 12 km.

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