Question : A boat covers a certain distance against the stream in 9 hours 36 min and it covers the same distance along the stream in 6 hours. What is the ratio of the speed of the boat in still water to that of the stream?
Option 1: 13 : 3
Option 2: 9 : 2
Option 3: 11 : 6
Option 4: 8 : 5
Latest: SSC CGL Tier 1 Result 2024 Out | SSC CGL preparation tips to crack the exam
Don't Miss: SSC CGL Tier 1 Scorecard 2024 Released | SSC CGL complete guide
Suggested: Month-wise Current Affairs | Upcoming Government Exams
Correct Answer: 13 : 3
Solution : Let the speed of the boat in still water and the speed of the stream be $x$ and $y$ km/hr. Time taken by boat to cover some distance along the stream = 6 hours Time taken by boat to cover the same distance against the stream = 9 hours 36 min = 9.6 hours Speed of water along the stream = $x+y$ km/hr Speed of water against the stream = $x-y$ km/hr We know, Distance = Speed × Time According to the question, $6(x+y)=9.6(x-y)$ ⇒ $15.6y = 3.6x$ ⇒ $\frac{x}{y}=\frac{15.6}{3.6}$ ⇒ $\frac{x}{y}=\frac{13}{3}$ Hence, the correct answer is 13 : 3.
Candidates can download this ebook to know all about SSC CGL.
Result | Eligibility | Application | Selection Process | Preparation Tips | Admit Card | Answer Key
Question : A boat covers a distance of 80 km downstream in 8 hours, while it takes 10 hours to cover the same distance upstream. What is the speed (in km/hr) of the boat in still water?
Question : A boat running upstream takes 10 hours to cover a certain distance, while it takes 7 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and that of the water current, respectively?
Question : A boat covers 35 km downstream in 2 h and covers the same distance upstream in 7 h. Find the speed (in km/h) of the boat in still water.
Question : A boat takes half the time to move a certain distance downstream than upstream. The ratio of the speed of the boat in still water to that of the current is:
Question : A certain distance is covered by a person at a certain speed. If another person covers 25% of the distance in triple the time, the ratio of the speed of the first person to that of the second person is:
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile