Question : A boat moves with a speed of 5 𝑘𝑚/ℎ relative to water in a river flowing with a speed of 3 𝑘𝑚/ℎ and having a width of 1 𝑘𝑚. The minimum time taken around a round trip is
(A) 5 min
(B) 60 min
(C) 20 min
(D) 30 min
Answer : option (D)
Solution :
