Darwin Day / International Darwin Day is a celebration to commemorate the birthday of Charles Darwin born on 12 February 1809 at Shrewsbury, Shropshire, England and remembering his vital contributions in the field of science and humanity.
Two blends of a commodity costing Rs. 70 and Rs. 80 per kg respectively are mixed in the ratio of 2:3 by weight. If one-fifth of the mixture is sold at ...
A mixture of milk and water contains 30% water. On adding 18 litres of water, the quantity of milk becomes 50% more than that of water. Find the initial...
A vessel contains a mixture of milk and water in the ratio 7:2 respectively. 90 liters of the mixture is taken out of the vessel ...
A tank initially contains a water-alcohol mixture in a 7:3 ratio. After removing 20 liters of the mixture and replacing it with pure alcohol, the ratio ...
Quantity of water in a 250 litres mixture (alcohol + water) is 30 litres less than the quantity of alcohol in it. Find the quantity of water to be mixed...
Mixture 'A' contains milk and water in the ratio of 5:9, respectively, while Mixture 'B' consists of water and milk in the ratio of 11:14, respectively...
A 200 litres mixture of juice and water contains 30% juice. How much water should be added to the mixture to make the quantity of water 80% of the total...
Two alloys are combined to create a new alloy. The first alloy contains 20% copper, and the second alloy contains 40% copper. If the resulting alloy has...
In a mixture of 45 litres, the ratio of wine to water is 2 : 3. If this ratio is to be 1 : 3, then what is the quantity of water needed to be added?
A Vessel if full of milk, 5 litre of milk is taken out and replaced by water. This process is repeated once more, find the initial amount of milk in the...
