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Let the capacity of the tank be ‘20’ litres {LCM (10, 20)} Efficiency of pipe ‘A’ = (20/10) = 2 litres/minute Efficiency of pipe ‘B’ = (20/20) = 1 litres/minute Quantity of water filled by pipe ‘A’ in 4 minutes = 4 × 2 = 8 litres Quantity of water to be filled = 20 – 8 = 12 litres Time taken by pipe ‘A’ and ‘B’ together to fill 12 litres of water = {12/(2 – 1)} = 12 minutes Total time taken = 4 + 12 = 16 minutes
Which of the following is a bacterial disease?
Which of the following are examples of macro minerals?
The phenomenon of splitting white light into its component colors is called:
Which of the following is not a purpose of transpiration?
What is the law of reflection?
Natural radioactivity was discovered by
Which type of tissue in humans transports oxygen to the body's cells?
Before X-ray examination (coloured X-ray) of the stomach, patients are given suitable salt of barium because
When body is accelerated:
What is the atomic number of carbon?