A certain river has a current of 4 miles per hour.A boat takes twice as long to travel upstream between two points as it does to travel downstream between the same two points . What is the speed of the boat in still water ?

A 6 miles per hour
B 8 miles per hour
C 12 miles per hour
D cannot be determined

Correct Answer: 12 miles per hour

Let, boat speed is xATQX+4=2(x-4)X+4=2x-8X=12
Bissoy MCQ
#গণিত #নৌকা ও স্রোত (Boat and stream) #IFIC Bank Ltd #Trainee Asst. Officer 09.02.2018

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