| 1. | How much water must be added to 30 litres of milk at 2 litres for $1.40 so as to have a mixture worth $0.50 a litre ? |
| a. | | 10 litres |
| b. | | 15 litres |
| c. | | 12 litres |
| d. | | 18 litres
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| 2. | A bottle contains 100 ml of an acid, 25 ml of acid was taken out of the bottle and replaced by water. Then, 25ml of mixture was taken out and again replaced by water. The whole process was repeated for third time. How much acid is now left in the bottle? |
| a. | | app. 40 ml |
| b. | | app. 42 ml |
| c. | | app. 38 ml |
| d. | | app. 35 ml
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| 3. | In what ratio must candy worth $4 per dozen be mixed with candy worth $5.90 per dozen, so as to get a mixture worth $4.50 per dozen? |
| a. | | 11:5 |
| b. | | 14:5 |
| c. | | 5:12 |
| d. | | 5:13
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| 4. | In what ratio must pens worth $4 per dozen be mixed with pens worth $8 per dozen, so as to get a mixture worth $6 per dozen? |
| a. | | 1:1 |
| b. | | 1:2 |
| c. | | 1:3 |
| d. | | 2:1
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| 5. | Onion worth $ 4.20 per kg is mixed with onions worth $ 6.40 per kg in the ratio 3:2. Find the price per kg of the mixture. |
| a. | | $ 5.20 |
| b. | | $ 4.90 |
| c. | | $ 4.99 |
| d. | | $ 5.08
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| 6. | Milk worth $ 2 per litre is mixed with milk worth $ 4 per litre in the ratio 4:1. Find the price per litre of the mixture. |
| a. | | $ 2.5 |
| b. | | $ 2.25 |
| c. | | $ 2.4 |
| d. | | $ 2.52
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| 7. | Three jars with similar capacity are filled with the mixture of milk and water. The proportion of milk and water in 1st, 2nd and 3rd jars is in the ratio 1:3, 2:3 and 4:1 respectively. All the mixtures are then put into a fourth jar. What is the proportion of milk and water in fourth jar? |
| a. | | 19:31 |
| b. | | 5:4 |
| c. | | 15:17 |
| d. | | 9:11
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| 8. | In what ratio must comics worth $ 5 each be mixed with books worth $ 20 each, so as to get a mixture worth $15 ? |
| a. | | 1:4 |
| b. | | 1:3 |
| c. | | 1:2 |
| d. | | 1:5
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| 9. | In what ratio must books worth $ 15 each be mixed with books worth $ 30 each, so as to get a mixture worth $ 20 ? |
| a. | | 1:3 |
| b. | | 3:4 |
| c. | | 3:2 |
| d. | | 2:1
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| 10. | How many kgs. of tomato costing $1.20 per kg must be mixed with 12 kg of potato costing $ 0.90 per kg so that 50% gain may be obtained by selling the mixture at $1.10 per kg? |
| a. | | 3.225 kg |
| b. | | 4.28 kg |
| c. | | 4.44 kg |
| d. | | 3.232 kg
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| 11. | How much water must be added to 80 litres of juice at 2 litres for $3, so as to have a mixture worth $1.20 a litre? |
| a. | | 15 litres |
| b. | | 13 litres |
| c. | | 10 litres |
| d. | | 20 litres
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| 12. | In what ratio should a customer buy salt and sugar, so that his expenses should not exceed $3, and if the price of salt and sugar is $1.50 per kg and $1.80 per kg respectively. |
| a. | | 4:5 |
| b. | | 4:7 |
| c. | | 3:4 |
| d. | | 3:5
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| 13. | in what ratio should a customer buy salt and sugar, so that his expenses should not exceed $3, and if the price of salt and sugar is $1.50 per kg and $1.80 per kg respectively. |
| a. | | 4:5 |
| b. | | 4:7 |
| c. | | 3:4 |
| d. | | 3:5
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