A cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both the taps are opened simultaneously, then after how much time will the cistern get filled?

Shohan

4 views

2025-01-04 04:42

1 Answers

Shohan

প্রশ্নে বলা হচ্ছে যে, একটি নল দ্বারা 4 ঘণ্টায় একটি চৌবাচ্চা পূর্ণ করা যায় এবং অপর একটি নল দিয়ে 9 ঘণ্টায় চৌবাচ্চাটি খালি করা যায়। উভয় নলই খোলা থাকলে কত সময়ে চৌবাচ্চাটি পূর্ণ হবে?

চৌবাচ্চাটি 1 পূর্ণ হয় = $\frac{1}{4} - \frac{1}{9} = \frac{9 - 4}{36} = \frac{5}{36}$ অংশ

এখন, চৌবাচ্চাটির $\frac{5}{36}$ অংশ পূর্ণ হয় 1 ঘন্টায়।

চৌবাচ্চাটির 1 বা সম্পূর্ণ অংশ পূর্ণ হয় = $\frac{5}{36} = 7.2$ ঘন্টায়

4 views Answered 2024-12-14 13:31

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