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11. Jaggu purchases 30 kg of wheat at the rate of Rs 11.50 per kg and 20 kg of wheat at the rate of Rs 14.25 per kg. He mixed the two and sold the mixture. Approximately at what price per kg should he sell the mixture to make 30 per cent profit?
  A.  Rs 17.20
  B.  Rs 18.20
  C.  Rs 19.20
  D.  Rs 18.50
     
   
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12. Prakash purchased 30 kg of rice at the rate of Rs 17.50 per kg and another 30 kg rice at a certain rate. he mixed the two and sold the entire qunatity at the rate of Rs 18.60 per kg and made 20% overall profit. At what price per kg did he purchase the lot of another 30 kg rice?
  A.  Rs 14.50
  B.  Rs 13.80
  C.  Rs 13.50
  D.  Rs 13.20
     
   
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13. Kaanu mixes 80 kg of sugar worth of Rs 6.75 per kg with 120 kg worth of Rs 8 per kg. At what rate shall he sell the mixture to gain 20%?
  A.  Rs 9.25
  B.  Rs 9.50
  C.  Rs 8.75
  D.  Rs 9.00
     
   
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14. A shopkeeper purchased 20 kg of rice at the rate of Rs 15 per kg and 30 kg of rice at the rate of Rs 13 per kg. At what price per kg should he sell the mixture to earn 33
1 / 3
% profit on the cost price?
  A.  Rs 18.40
  B.  Rs 18.60
  C.  Rs 18.20
  D.  Rs 18.80
     
   
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15. A mixture of a certain quantity of milk with 16 litres of water is worth 60 P per litre. If pure milk be worth 117 P per litre how much milk is there in the mixture?
  A.  22 litres
  B.  18 litres
  C.  20 litres
  D.  21 litres
     
   
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16. 200 gm of sugar solution has 40% sugar in it. How much sugar should be added to make it 50% in the solution?
  A.  30 gm
  B.  40 gm
  C.  50 gm
  D.  45 gm
     
   
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17. A petrol pump owner mixed leaded and unleaded petrol in such a way that the mixture contains 10% unleaded petrol. What quantity of leaded petrol should be added to 1 litre mixture so that the percentage of unleaded petrol becomes 5%.
  A.  1020 ml
  B.  1050 ml
  C.  1100 ml
  D.  1000 ml
     
   
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18. 15 litres of a mixture contains 20% alcohol and the rest water. If 3 litres of water be mixed in it, the percentage of alcohol in the new mixture will be:
  A.  18
2 / 3
%
  B.  17
2 / 3
%
  C.  16
2 / 3
%
  D.  15
2 / 3
%
     
   
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19. 729 ml of a mixture contains milk and water in the ratio 7:2. How much more water is to be added to get a new mixture containing milk and water in ratio 7:3?
  A.  81 ml
  B.  85 ml
  C.  78 ml
  D.  88 ml
     
   
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20. In a mixture of 60 litres, the ratio of milk and water is 2:1. If the ratio of the milk and water is to be 1:2, then the amount of water to be further added is:
  A.  50 litres
  B.  60 litres
  C.  55 litres
  D.  65 litres
     
   
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