| 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. | How many kgs of grain costing $2.50 per kg must be mixed with 24 kg of rice costing $1.50 per kg so that 20% gain may be obtained by selling the mixture at $ 2.00 per kg? |
| a. | | 10 kg |
| b. | | 2.4 kg |
| c. | | 4.8 kg |
| d. | | 12.2 kg
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| 3. | Chocolates at $12.00 per dozen is mixed with chocolate at $10.00 per dozen in the ratio 3:5. Find the price per dozen of the mixture. |
| a. | | $11.00 |
| b. | | $9.90 |
| c. | | $11.50 |
| d. | | $10.75
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| 4. | Determine the ratio in which a person should buy cookies, if type 1 cookie is worth $ 6.50 per kg and type 2 cookie is worth $ 6.90 per kg, and he wants to buy the mixture worth $6.75 per dozen? |
| a. | | 1:5 |
| b. | | 2:5 |
| c. | | 3:5 |
| d. | | 4:5
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| 5. | 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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| 6. | 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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| 7. | 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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| 8. | Three bottles with similar capacity are filled with the mixture of shower gel and water. The proportion of shower gel and water in 1st, 2nd and 3rd bottles is in the ratio 3:5, 5:7, 7:9 respectively. All the mixtures are then put into a fourth bottle. What is the proportion of shower gel and water in fourth jar? |
| a. | | 67:68 |
| b. | | 13:15 |
| c. | | 11:18 |
| d. | | 12:19
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| 9. | A bottle contains 50 ml of body oil, 10 ml of body oil was taken out of the bottle and replaced by hair oil. Then, 10ml of mixture was taken out and again replaced by hair oil. The whole process was repeated for third time. How much body oil is now left in the bottle? |
| a. | | 25.6 ml |
| b. | | 35.2 ml |
| c. | | 32.5 ml |
| d. | | 28.8 ml
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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. | Determine in what ratio must sand be mixed with clay to gain 15% by selling the mixture at cost price? |
| a. | | 3:2 |
| b. | | 1:5 |
| c. | | 1:2 |
| d. | | 3:4
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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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