Question
Two inlet pipes 'A' and 'B' can fill an empty tank in 30
minutes and 40 minutes, respectively. Another outlet pipe 'C' can empty the tank in 120 minutes. If all the three pipes are opened together, then find the time taken by them to fill the tank.Solution
Let the total capacity of the tank be 120 litres (LCM of 30, 40, and 120).
Efficiency of 'A' = 120 ÷ 30 = 4 litres/minute
Efficiency of 'B' = 120 ÷ 40 = 3 litres/minute
Efficiency of 'C' = 120 ÷ 120 = -1 litre/minute
Required time = 120 ÷ (4 + 3 - 1) = 120 ÷ 6 = 20 minutes
Drum culture technique is used to determine WR of which of the following crop?
Yield of dry matter is a function of:
Which of the following is a natural circulation type freezer?
Bio-fertilizers are used as:
Which of the following is best suited as catch crop?
Deforestation is
The loss of herbicide after application to soil is due to
Which reptile is characterized by the presence of four-chambered heart?
Which one of the following Material is widely used for coating in iron & steel pipes to avoid corrosion?
Jelly in which fruit peels remain suspended is called as
