Question
Quantitative Aptitude Question on Boat and Stream
A boat goes upstream at 2bkm/hr and downstream at 2akm/hr.The speed of boat in still water in km/hr is :
A
(2b−a)km/hr
B
(4b−a)km/hr
C
(4a−b)km/hr
D
(4a+b)km/hr
Answer
(4a+b)km/hr
Explanation
Solution
The correct option is (D):(4a+b)km/hr