Question
What is the principle behind the operation of a washing
machine?Solution
A washing machine operates on the principle of centrifugation, where clothes are spun at high speeds to remove water through centrifugal force.
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A mixture contains ‘x’% milk. 20% of this mixture is taken out and is replaced with same quantity of water. This procedure is repeated two more time...
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A vessel holds ‘4x’ litres of milk and ‘3y’ litres of water. When 25 litres of water is poured into it, the milk to water ratio becomes 8:7. How...
The ratio of quantity of milk and water in a 300 litres mixture is 6:4, respectively. On removing 'M' litres of mixture the difference between the quant...
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