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একটি পানির ট্যাঙ্কে দুটি নল আছে। প্রথম নলটি খুলে দিলে ট্যাঙ্কটি ১০ ঘন্টায় পূর্ণ হয় এবং দ্বিতীয় নলটি খুলে দিলে পূর্ণ ট্যাঙ্কটি ১৫ ঘন্টায় খালি হয়। দুটি নল এক সাথে খুলে দিলে খালি ট্যাঙ্কটি কত সময়ে পূর্ণ হবে?

Created: 7 years ago | Updated: 3 months ago
Updated: 3 months ago
পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা পররাষ্ট্র মন্ত্রণালয়ের ব্যক্তিগত কর্মকর্তা-১২.০২.২০০৬ গণিত নল ও চৌবাচ্চা (Pipes and cistern)
Description
2.1k
Best Ans:

প্রথম নলটি ১০ ঘন্টায় পূর্ণ করে একটি ট্যাংক

প্রথম নলটি ১ ঘন্টায় পূর্ণ করে ১/১০ অংশ

দ্বিতীয় নলটি ১৫ ঘন্টায় খালি করে একটি ট্যাংক

দ্বিতীয় নলটি ১ ঘন্টায় খালি করে ১/১৫ অংশ

দুটি নল এক সাথে ১ ঘন্টায় পূর্ণ করে (১/১০ - ১/১৫) অংশ = ২/৬০ = ১/৩০ অংশ

দুটি নল এক সাথে ১/৩০ অংশ পূর্ণ করে ১ ঘন্টায়

সুতরাং, '' '' ১ বা সম্পূর্ণ '' '' ''' ৩০ ''

উত্তরঃ ৩০ ঘন্টা

7 years ago
Md Azizur Rahman
FOUNDER OF SATT

গণিত

Edit

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Content added by
MD.YELIAS
Content updated By
Eusuf

Related Question

দুটি নলদ্বারা একটি চৌবাচ্চা যথাক্রমে ১০ ও ১৫ ঘণ্টায় পানি পূর্ণ হয়। নল দুটি একত্রে খোলা রাখলে চৌবাচ্চাটি কতক্ষণে পূর্ণ হবে?
নলাকার বস্তুর আয়তন মাপার সূত্র কোনটি? যেখানে, r= ব্যাসার্ধ h=দৈর্ঘ্য ।
3 pums, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?
একটি চৌবাচ্চার দৈর্ঘ্য ৩ মিটার, প্রস্থ ২ মিটার ও উচ্চতা ৪ মিটার । এতে কত লিটার পানি ধরবে?
একটি চৌবাচ্চার দৈর্ঘ্য ৩ মিটার , প্রস্থ ২ মিটার উচ্চতা ৪ মিটার । এতে কত লিটার পানি ধরবে?
A tap can fill a tank in 6 hours . After half the tank is filled another simila tap is opened. What is the total time taken to fill the tank completely?
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        • app/Http/Controllers/Academy/QuestionController.php:256
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        • app/Http/Controllers/Academy/QuestionController.php:256
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        • app/Http/Controllers/Academy/QuestionController.php:411
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        • app/Http/Controllers/Academy/QuestionController.php:411
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        • app/Http/Controllers/Academy/QuestionController.php:451
        • app/Http/Controllers/Academy/QuestionController.php:411
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        • app/Http/Controllers/Academy/QuestionController.php:411
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        Backtrace
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        Backtrace
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