1.

A train runsfor3hat the speedof40 km /hand then for 4 (1)/(2) h atthe speedof 60 km/h , thus. It wantsto cover 3/5 th part of it.theremainingdistancedistancein4 h,findtheaveragespeedof thetrainforremainingdistance.

Answer»

a. 45 km/h
B. 35 km/h
c. 80 km/h
d. 65 km/h

Answer :D


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