Alligation or Mixture on Arithmetic Aptitude related Questions and Answers

Question 1 : The ratio, in which tea costing Rs. 192 per kg is to be mixed with tea costing Rs. 150 per kg so that the mixed tea when sold for Rs. 194.40 per kg, gives a profit of 20%.
1. 2:05
2. 3:05
3. 5:03
4. 5:02
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Question 2 : An alloy contains zinc, copper and tin in the ratio 2:3:1 and another contains copper, tin and lead in the ratio 5:4:3. If equal weights of both alloys are melted together to form a third alloy, then the weight of lead per kg in new alloy will be:
1. 1/2 kg
2. 1/8 kg
3. 3/14 kg
4. 7/9 kg
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Question 3 : In a 729 litres mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing milk and water in the ratio 7:3, the amount of water to be added is:
1. 81 litres
2. 71 litres
3. 56 litres
4. 50 litres
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Question 4 : In what ratio must a mixture of 30% alcohol strength be mixed with that of 50% alcohol strength so as to get a mixture of 45% alcohol strength?
1. 1:02
2. 1:03
3. 2:01
4. 3:01
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Question 5 : To gain 10% on selling sample milk at the cost price of pure milk, the quantity of water to be mixed with 50 kg. of pure milk is
1. 2.5 kg
2. 5kg
3. 7.5 kg
4. 10 kg
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Question 6 : From a container, full of pure milk, 20% is replaced by water and this process is repeated three times. At the end of third operation, the quantity of pure milk reduces to
1. 40.00%
2. 50.00%
3. 51.20%
4. 58.80%
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Question 7 : Three types of wheat of Rs. 1.27, Rs. 1.29 and Rs. 1.32 per kg are mixed together to be sold at Rs. 1.30 per kg. In what ratio should this wheat be mixed?
1. 1:02:03
2. 2:02:03
3. 2:03:01
4. 1:01:02
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Question 8 : In a zoo, there are deers and there are ducks. If the heads are counted, there are 180, while the legs are 448. What will be the number of deers in the zoo?
1. 136
2. 68
3. 44
4. 22
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Question 9 : An amount of Rs. 680 was invested at 6% rate of interest and another sum of money was invested at 10% interest. If the average interest on the total at the end of the year was 7.5%, how much was invested at 10%?
1. Rs. 480
2. Rs. 412.6
3. Rs. 267.5
4. None of these
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Question 10 : Weights of two friends Ram and Shyam are in the ratio 4:5. Ram's weight increased 10% and total weight of Ram and Shyam become 82.8 kg, with an increases of 15%. By what percent did the weight of Shyam increase?
1. 19%
2. 10%
3. 21%
4. 16%
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