Arithmetic (Mixture Problems)
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1) A container contains 80L of a mixture of milk and water in the ratio 4:5. How much water should be added to the container so that the ratio of milk to water becomes 1:1?
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2) A solution contains 30% acid. How many liters of pure acid should be added to 20L of this solution to make the strength of the acid 40%?
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3) A vessel contains 60L of a mixture of milk and water in the ratio 3:2. How much water should be added to the vessel so that the ratio of milk to water becomes 2:1?
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4) A solution contains 35% alcohol. How many liters of pure alcohol should be added to 10L of this solution to make the strength of the alcohol 45%?
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5) A container contains 60L of a mixture of milk and water in the ratio 2:1. How much water should be added to the container so that the ratio of milk to water becomes 3:2?
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6) A solution contains 20% acid. How many liters of pure acid should be added to 20L of this solution to make the strength of the acid 30%?
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7) A solution contains 30% alcohol. How many liters of pure alcohol should be added to 10L of this solution to make the strength of the alcohol 40%?
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8) A mixture of 60L milk and water contains 15% water. How much water should be added to the mixture so that the percentage of water becomes 25%?
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9) A vessel contains a mixture of milk and water in the ratio 4:5. If 18L of water is added to the mixture, the ratio becomes 4:6. How much milk was there in the mixture?
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10) A mixture of 40L milk and water contains 25% water. How much water should be added to the mixture so that the percentage of water becomes 40%?
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11) A container contains 20L of a mixture of milk and water in the ratio 1:4. How much water should be added to the container so that the ratio of milk to water becomes 1:2?
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12) A solution contains 40% acid. How many liters of pure acid should be added to 20L of this solution to make the strength of the acid 45%?
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13) A 40L container contains a mixture of milk and water in the ratio 3:2. How much water should be added to the container so that the ratio becomes 1:1?
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14) A vessel contains 60L of a solution of milk and water in the ratio 2:3. How much water should be added to the vessel so that the ratio of milk to water becomes 1:2?
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15) A mixture of 80L milk and water contains 10% water. How much water should be added to the mixture so that the percentage of water becomes 20%?
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16) A container contains a mixture of milk and water in the ratio 9:4. If 16L of water is added to the mixture, the ratio becomes 9:7. How much milk was there in the mixture?
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17) A solution contains 20% alcohol. How many liters of pure alcohol should be added to 10L of this solution to make the strength of the alcohol 25%?
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18) A solution contains 30% acid. How many liters of pure acid should be added to 20L of this solution to make the strength of the acid 35%?
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19) A vessel contains 60L of a mixture of milk and water in the ratio 3:2. How much water should be added to the vessel so that the ratio of milk to water becomes 2:1?
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20) A solution contains 35% alcohol. How many liters of pure alcohol should be added to 10L of this solution to make the strength of the alcohol 50%?
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21) A container contains 60L of a mixture of milk and water in the ratio 2:1. How much water should be added to the container so that the ratio of milk to water becomes 3:2?
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22) A solution contains 20% acid. How many liters of pure acid should be added to 20L of this solution to make the strength of the acid 25%?
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23) A 80L container contains a mixture of milk and water in the ratio 3:2. How much water should be added to the container so that the ratio becomes 1:1?
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24) A vessel contains 40L of a solution of milk and water in the ratio 1:2. How much water should be added to the vessel so that the ratio of milk to water becomes 1:1?
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25) A mixture of 60L milk and water contains 20% water. How much water should be added to the mixture so that the percentage of water becomes 40%?
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26) A vessel contains a mixture of milk and water in the ratio 7:3. If 12L of water is added to the mixture, the ratio becomes 7:5. How much milk was there in the mixture?
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27) A container contains 80L of a mixture of milk and water in the ratio 4:5. How much water should be added to the container so that the ratio of milk to water becomes 1:1?
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28) A solution contains 25% acid. How many liters of pure acid should be added to 20L of this solution to make the strength of the acid 30%?
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29) A 60L container contains a mixture of milk and water in the ratio 2:3. How much water should be added to the container so that the ratio becomes 1:2?
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30) A vessel contains 40L of a solution of milk and water in the ratio 3:2. How much water should be added to the vessel so that the ratio of milk to water becomes 2:1?
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31) A mixture of 40L milk and water contains 10% water. How much water should be added to the mixture so that the percentage of water becomes 20%?
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32) A container contains a mixture of milk and water in the ratio 7:2. If 9L of water is added to the mixture, the ratio becomes 7:3. How much milk was there in the mixture?
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33) A solution contains 20% acid. How many liters of pure acid should be added to 10L of this solution to make the strength of the acid 25%?
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34) A vessel contains 80L of a mixture of milk and water in the ratio 5:3. How much water should be added to the vessel so that the ratio of milk to water becomes 3:2?
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35) A solution contains 40% alcohol. How many liters of pure alcohol should be added to 10L of this solution to make the strength of the alcohol 50%?
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36) A container contains 40L of a mixture of milk and water in the ratio 3:1. How much water should be added to the container so that the ratio of milk to water becomes 4:1?
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