Subject
Bank Exam
Topic
Probashi Kallyan Bank Ltd (Senior Officer) - 09.10.2021
A boat sailing against a stream of river takes 6 hours to travel 24 km/s ,while sailing with the stream it takes 4 hours to travel the same distance .What is the speed of the stream ?
A boat sailing against a stream of river takes 6 hours to travel 24 km/s ,while sailing with the stream it takes 4 hours to travel the same distance .What is the speed of the stream ?
ক)
2.5 km/hrখ)
1.5km/hrগ)
1km/hrঘ)
km/hrExplanation
প্রশ্নঃ- স্রোতের প্রতিকূলে একটি নৌকা 6 ঘণ্টায় 24km এবং অনুকূলে ঐ দূরত্ব ফিরে আসতে 4 ঘণ্টা সময় লাগে ।স্রোতের গতিবেগ কত ? উত্তরঃ- ধরি , নৌকার বেগ x kmph 24/4 =6 কি মি এবং প্রতিকূলে প্রতি ঘণ্টায় গতিবেগ 24/6 =4 কি মি প্রশ্নমতে , x+y=6........(i) x-y =4...............(ii) ____________________________ 2x =10 ∴ x =5 x এর মান (i) নং সমীকরণে বসিয়ে পাই 5+y=6 বা,y=6-5 =1Related questions
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