A) 12.5km/hr
B) 12km/hr
C) 25km/hr
D) 5km/hr
Correct Answer: B
Solution :
Ship sails out to a mark at the speed \[=\frac{350}{7}=Rs.50.\] km/hr and ship sails back at the speed \[\frac{1}{12}+\frac{1}{16}=\frac{4+3}{48}=\frac{7}{48}\]km /hr. \[\frac{48}{7}\] Average speed of sailing is given by \[=6\frac{6}{7}\] \[\frac{y}{x}\]You need to login to perform this action.
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