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The difference between two positive numbers is 11 and the ratio between them is 2:1. Find the product of the two numbers.

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Important Questions on Ratio, Proportion and Variation

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Four numbers in the ratio 1:2:4:8 add up to give a sum of 120. Find the value of the biggest number.
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Three men rent a farm for 14000 per annum. A puts 220 cows in the farm for 3 months, B puts 220 cows for 6 months and C puts 880 cows for 3 months. What percentage of the total expenditure should C pay?
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A dishonest shopkeeper mixed 1 litre of water for every 3 litres of petrol and thus made up 36 litres of petrol. If he now adds 15 litres of petrol to the mixture, find the ratio of petrol and water in the new mixture.
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If the ratio of the ages of A and B is 2:5 at present, and fifiteen years from now, the ratio will get changed to 7:13, then find A's present age.
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At constant temperature, pressure of a definite mass of gas is inversely proportional to the volume. If the pressure is reduced by 20%, find the respective change in volume.
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If 620 bananas were distributed among three monkeys in the ratio 13:12:15, how many bananas did the first monkey get?
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A mixture contains milk and water in the ratio 3:1. On adding 5 litres of water, the ratio of milk to water becomes 2:1. Find the quantity of milk in the mixture.
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IMPORTANT
A beggar had one rupee, two rupess and five rupees coints in the ratio 5:15:12 respectvely at the end of the day. If that day he earned a total of 95, how many one rupee coins did he have?