Subject
Bank Exam
Topic
Joint Recruitment Test for 8 Banks (SO) [03-09-2019, AUST
[ Read the following questions carefully and choose the right answer. ]Rahima can row 16 km/hr in still water. It takes her thrice as long to row up as to row down the river . Find the difference between her speed in still water and that of the stream .
[ Read the following questions carefully and choose the right answer. ]Rahima can row 16 km/hr in still water. It takes her thrice as long to row up as to row down the river . Find the difference between her speed in still water and that of the stream .
ক)
8 km/hrখ)
16 km/hrগ)
24 km/hrঘ)
12 km/hrExplanation
প্রশ্নে বলা হচ্ছে, স্থির পানিতে রহিমা 16 kmph বেগে যেতে পারে । স্রোতের অনুকূলে যেতে যে সময় লাগে, স্রোতের প্রতিকূলে যেতে তার তিঙ্গুণ সময় লাগবে । স্থির পানিতে তার বেগ ও স্রোতের বেগের পার্থক্য ? ধরি, স্রোতের বেগ x kmph স্রোতের অনুকূলে বেগ = ( 16+x ) kmph এবং স্রোতের প্রতিকূল বেগ = ( 16-x ) kmph প্রশ্নমতে, 16 + x = 3 ( 16-x ) => 16+x = 48 - 3x => x + 3x = 48 - 16 = 32 => 4x = 32 x = 8 অতএব, স্রোতের বেগ 8 kmph স্থির পানিতে নৌকার বেগ/ নিজের সাঁতরানোর বেগ ও স্রোতের বেগের পার্থক্য = 16 - 8 = 8 kmphRelated questions
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