Question

On a river, $B$ is an intermediate station equidistant from the stations $A$ and $C$. A boat can go from $A$ to $B$ and come back in $6$ hours. If it takes $4$ hours to go from $A$ to $C$, how long would it take to go from $C$ to $A$ ?

• A. $4$ hours
• B. $2$ hours
• C. $8$ hours
• D. None of these

Answer 1

Answer: (C)

$8$ hours

Time taken from $A$ to $C$ $=4$ hours
Time taken from $A$ to $B$ $=2$ hours (Since B is intermediate)
Also, time taken from $A$ to $B$ and $B$ to $A$ $=6$ hours

Therefore, time taken from $B$ to $A=6-2=4$ hours
Time taken from $C$ to $A=2\times 4=8$ hours.