alligation-or-mixture aptitude question and answers -Page 29

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Alligation or Mixture problems

1. In a mixture of milk and water, there is 19% milk. If the quantity of milk in the mixture is 437 mililitres, then what is the total quantity (in millilitres) of mixture?
Options
A. 2300
B. 2200
C. 2350
D. 2400

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2. In a mixture of 25 litres, the ratio of milk to water is 4:1. Another 3 litres of water is added to the mixture. The ratio of milk to water in the new mixture is
Options
A. 5:1
B. 5:2
C. 5:3
D. 5:4

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3. In two types of brass, the ratios of Copper to Zinc are 8:3 and 15:7 respectively. If the two types of brass be melted and mixed in the ratio 5:2 a new type of brass is obtained. The ratio of Copper to Zinc in this new type of brass is
Options
A. 3:2
B. 2:3
C. 3:4
D. 5:2

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4. An alloy is made by mixing metal A costing Rs 2000/kg and metal B costing Rs 400/kg in the ratio A:B = 3:1. What is the cost (in Rs) of 8 kilograms of this alloy?
Options
A. 1600
B. 9800
C. 6400
D. 12800

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5. In what ratio should tea costing Rs 300/kg be mixed with tea costing Rs 200/kg so that the cost of the mixture is Rs 225/kg?
Options
A. 3 : 1
B. 1 : 3
C. 1 : 4
D. 4 : 1

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6. The ratio of milk and water in three samples is 1 : 3, 3 : 5 and 11 : 5. A mixture containing equal quantities of all three samples is made. What will be the ratio of milk and water in the new mixture?
Options
A. 7 : 9
B. 5 : 7
C. 15 : 13
D. 9 : 11

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7. In a container, there is 960 ltr of pure milk from which 48 ltr of milk is replaced with 48 ltr of water, again 48 ltr milk is replaced by same amount of water, as this process is done once more. Now, what is the amount of pure milk?
Options
A. 901.54 ltr
B. 821.54 ltr
C. 719.64 ltr
D. 823.08 ltr

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8. There are three bottles of mixture of syrup and water of ratios 2:3, 3:4 and 7:5. 10 Litres of first and 21 Litres of second bottles are taken. How much quantity from third bottle is to be taken so that final mixture from three bottles will be of ratios 1:1.
Options
A. 25 Litres
B. 20 Litres
C. 35 Litres
D. 30 Litres

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9. In a colored picture of blue and yellow color, blue and yellow color is used in the ratio of 4:3 respectively. If in upper half, blue : yellow is 2:3, then in the lower half blue : yellow is
Options
A. 1 : 1
B. 2 : 1
C. 26 : 9
D. 9 : 26

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10. An alloy contains copper and tin in the ratio 3 : 2. If 250 gm of copper is added to this alloy then the copper in it becomes double the quantity of tin in it. What is the amount (in gm) of tin in the alloy?
Options
A. 250
B. 750
C. 1000
D. 500

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