Question
Pipe ‘A’ fills a tank in 25 hours, and pipe ‘B’
empties it in 50 hours. If both are opened together, how much time will it take to fill 80% of the tank?Solution
Let the capacity of the tank be 100 litres.So, efficiency of pipe ‘A’ = 100 ÷ A = 4 litres/hour And efficiency of pipe ‘B’ = 100 ÷ B = 2 litres/hour So, combined efficiency of both pipes = 4 – 2 = 2 litres/hour So, time taken to fill 80% of the tank = (100 × 0.80) ÷ 2 = 80 ÷ 2 = 40 hours
The yellow vein mosaic of okra is majorly transmitted by ____
In which relation, an increase or a decrease in production of one product affect the production of the other inversely
When did cotton become a well-established crop in the Indus River Valley?
When to irrigate wheat after sowing if only one irrigation water is available:
The Law of Segregation states that:Â
Idea of hybrid maize was first conceived by E.M East and G.H Shull in 1910 by which technique among the inbred lines?
Which of the following is not the characteristic feature of class Insecta?Â
Fanging is related to
The size of the clay particles is:
Which plant exhibits modified papery calyx enclosing the fruit loosely with entrapped air for seed dispersal ?
Relevant for Exams:
