Question : A boat goes 10 km upstream in 50 minutes and the speed of the stream is 3 kmph. Find the speed of the boat in still water (in kmph).
Option 1: 15
Option 2: 10
Option 3: 8
Option 4: 12
New: SSC CHSL tier 1 answer key 2024 out | SSC CHSL 2024 Notification PDF
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
Correct Answer: 15
Solution :
Given: A boat goes 10 km upstream in 50 minutes.
The speed of the stream is 3 kmph.
Upstream speed in km/h = $\frac{10}{50}×60=12$ kmph
Let the speed of a boat in still water be $x$ kmph.
We know that,
Upstream speed = speed of the boat in still water – speed of the stream
⇒ $12=x–3$
⇒ $x=12+3=15$ kmph
Hence, the correct answer is 15.
Related Questions
Know More about
Staff Selection Commission Combined High ...
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Get Updates Brochure
Your Staff Selection Commission Combined Higher Secondary Level Exam brochure has been successfully mailed to your registered email id “”.
