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Marconi discovered long radiowave in 1986. Ritter discovered UV rays. Newton discovered visible radiation. Henrik Hertz discovered short radiowave.
In a 448 ml mixture, the ratio of copper to gold is 9:5. When 'a + 12' ml of copper and 'a - 10' ml of gold are added to this mixture, the ratio of copp...
A mixture of milk and water contains 40% water. On adding 15 litres of water, the quantity of milk becomes 20% more than that of water. Find the initial...
600 ml of a mixture contains milk and water in the ratio of 14 respectively. If 90 ml of water and 100 ml of milk are added into it, then the ratio of m...
Quantity of water in a 280 litres mixture (alcohol + water) is 40 litres less than the quantity of alcohol in it. Find the quantity of water to be mixed...
A mixture (milk and water) contains 40% milk and rest 192 litres water. How much milk should be added to the mixture to make the ratio of milk to water ...
750 ml mixture contains milk and water in the ratio of 11:14 respectively. If 30% of the mixture is taken out, and 180 ml of water is added into the rem...
A vessel contains 120 liters of a mixture in which oil and water are in the ratio 2:3. If 40 liters of this mixture are taken out and 'x' liters of oil ...
A container has 40 liters of a mixture of milk and water, where the ratio of milk to water is 5:3. If 8 liters of the mixture is removed and replaced wi...
