A pipe fills a tank in P minuties and another pipe fills the tank in Q minutes. A different pipe makes the tank empty in R minutes. If all these three pipe are opened then in how many minutes the tank will be full?

Created: 3 years ago | Updated: 3 weeks ago

Updated: 3 weeks ago

\frac{p + q - q}{pqr}

\frac{pq + pr - pq}{pqr}

\frac{pq + qr - pr}{pqr}

\frac{pqr}{qr + pr - pq}

None

পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা বাংলাদেশ সেতু কর্তৃপক্ষ (সহকারী সাব-ইঞ্জিনিয়ার) 18-12-2020 গণিত নল ও চৌবাচ্চা (Pipes and cistern)

Des

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প্রশ্ন: A pipe fills a tank in P minuties and another pipe fills the tank in Q minutes. A different pipe makes the tank empty in R minutes. If all these three pipe are opened then in how many minutes the tank will be full?

সঠিক উত্তর : $\frac{pqr}{qr + pr - pq}$

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Des.

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A pipe fills a tank in P minuties and another pipe fills the tank in Q minutes. A different pipe makes the tank empty in R minutes. If all these three pipe are opened then in how many minutes the tank will be full?

প্রশ্ন: A pipe fills a tank in P minuties and another pipe fills the tank in Q minutes. A different pipe makes the tank empty in R minutes. If all these three pipe are opened then in how many minutes the tank will be full?

গণিত

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