question_answer

The speed of a boat in still water is 17.5 kmph and that of current is 2.5 kmph. The boat goes from X to Y in downstream and returns to point Z. The whole journey takes 429 minutes. If the distance between Z and Y is 2/5 of the distance between X and Y. Find the total distance covered by the boat. (approximate to the nearest integer).

A) 130 km

B) 140 km

C) 160 km

D) 120 km

E) 150 km