A tank can be filled by a tap in 20 minutes and by another tap in 60 minutes. Both the taps are kept open for 10 minutes and then the first tap is shut off. After this, the tank will be completely filled in what time? (Pipe & Cistern)

Shohan

5 views

2025-01-04 04:42

1 Answers

Shohan

প্রশ্নে বলা হচ্ছে যে, একটি নল দ্বারা 20 মিনিটে এবং অপরটি দ্বারা 60 মিনিটে একটি ট্যাংক পূর্ণ করা যায়। উভয় নল একত্রে 10 মিনিট চলার পর প্রথম নলটি বন্ধ করে দেয়া হলো। এখন প্রশ্ন হলো কত সময়ে ট্যাংকটি পূর্ণ হবে ?

Two tank fill in 10 minutes $= 10 (\frac{1}{20} + \frac{1}{60}) = \frac{1}{2} + \frac{1}{6} = (\frac{3 + 1}{6}) = \frac{4}{6} = \frac{2}{3} P a r t$

∴ Remaining $= 1 - \frac{2}{3} = \frac{3 - 2}{3} = \frac{1}{3}$ Part

By second pipe $\frac{1}{60}$ part is filled in 1 miniute

∴ By second pipe 1 or complete part is filled in $= \frac{60 \times 1}{1} m i n u t e s$

∴ By second pipe $\frac{1}{3}$ part is filled in $= \frac{60}{3}$ = 20 minutes

5 views Answered 2024-12-14 13:31

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