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Let the total capacity of the tank = L.C.M of 14 and 18 = 126 units So, efficiency of pipe 'A' alone = 126 ÷ 14 = 9 units/minute Combined efficiency of pipes 'A' and 'B' = 126 ÷ 18 = 7 units/minute So, efficiency of pipe 'B' alone = 7 - 9 = -2 units/minute (outlet) So, time taken by pipe 'B' alone to empty 50% of the cistern = (126 X 0.5) ÷ 2 = 31.5 minutes. Hence, option a.
Which method of extension is used for teaching a group of people new techniques and practices like preparing nursery bed, treating seeds with insecticid...
Highest productivity of sugarcane in India is :
Which variety of apple is recommended for early yield during April - May?
In which year was the "Amrit Catla" fish variety officially trademarked?
What is the Capacity of High-volume sprayer?
The yearly sequence and spatial arrangement of crops or of crops and fallow on a given area is known as
What sector-specific state body assists in the development of small and medium-scale enterprises in Uttarakhand?
A phenomenon in which the fruits are produced without fertilisation is called
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The headquarters of AGMARK is situated at:
