Question
There are two inlet pipes 'P', 'Q' and one outlet pipe 'R'
in a tank. ‘P’ and ‘Q’ can fill the tank in 20 minutes and 10 minutes respectively. ‘R’ is 50% less efficient than ‘P’. If ‘P’ and ‘R’ are open together but after 10 minutes, ‘P’ is replaced with ‘Q’, find the total time required to fill the tank completely.Solution
Tank capacity = 20x units (LCM of 20 and 10).
P = x units/min, Q = 2x units/min, R = 0.5x units/min
First 10 mins: (x - 0.5x) × 10 = 5x units
Remaining = 20x - 5x = 15x units
Net rate = 2x - 0.5x = 1.5x
Time = 15x / 1.5x = 10 minutes
Total time = 10 + 10 = 20 minutes
Which of the following is a technique for reclamation of saline sodic soils?
Which of the following statement is not true for coated conventional fertilizers
In Gerbera, removal of inferior quality flowers at the initial stage is called
What is the colustrum requirement for the new born calf on the basis of body weight
Congress grass is
In the ATP-driven proton potassium exchange mechanism, the H+ ions are formed due to dissociation of
Foliar application of the following improves the grain yield in blackgram during flowering stage
The quantum of _____________ does not change with the level of production or irrespective of the level of enterprises taken up.
Which type of farming involves clearing tracts of land by burning, cultivating for a limited period, and then abandoning the land for a number of years?
India has :