The speed of a boat in still water in 42 km/hr and the rate of current is 4 km/hr. The distance travelled downstream in 44 minutes is:
Answers
A) 86.6 km
B) 46.6 km
C) 33.7 km
D) 35.6 km
E) 26.6 km

Rationale: "speed downstream = ( 42 + 4 ) = 46 kmph time = 44 minutes = 44 / 60 hour = 11 / 15 hour distance travelled = time × speed = 11 / 15 × 46 = 33.7 km answer : c"
Answer: C