alligation-or-mixture aptitude question and answers -Page 17

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Alligation or Mixture problems

1.
A can contains a mixture of 2 liquids A and B in proportion 7 : 5 when 9 liters of mixture are drawn off and the can is filled with B, the proportion of A and B becomes 7 : 9. How many liters of liquid A was contained by the can initially?
Options
A. 25
B. 10
C. 20
D. 21

2.
15 liters of a mixture contains 20 % alcohol and the rest water. If 3 liters of water be mixed in it, the % of alcohol in the new mixture will be ?
Options
A. 17
B. 16 2 3
C. 18 1 2
D. 15

3.
A milk seller pays Rs. 500 per kiloliter for his milk. He adds water to it and sells the mixture at 56 P a liter, thereby making altogether 40 % profit. Find the proportion of water to milk which his customers receive?
Options
A. 1 : 4
B. 2 : 3
C. 1 : 5
D. 4 : 1

4.
How many bananas at 5 for Re. 1�20 should be mixed with 300 bananas at 6 for Rs. 2�10, so that they should all be worth Rs. 3�60 a dozen?
Options
A. 350
B. 280
C. 320
D. 250

5.
Fresh fruit contains 72 % water and dry fruits contains 20 % water. How much dry fruit from 100 kg of fresh fruit can be obtained?
Options
A. 32 kg
B. 33 kg
C. 30 kg
D. 35 kg

6.
From a vessel filled with alcohol 1/5 of its contents is removed and the vessel is then filled up with water. If this be done 5 times in succession, what proportion of the alcohol originally contained in the vessel will have been removed from it?
Options
A. 1024 3125
B. 2101 3125
C. 1024 2101
D. None of these

7.
A solution of sugar syrup has 15 % sugar. Another solution has 5 % sugar. How many liter of the second solution must be added to 20 liters of the first solution to make a solution of 10 % sugar?
Options
A. 10
B. 5
C. 15
D. 20

8.
Two casks of 48 and 42 liters are filled with mixture of wine and water13 : 7 and 18 : 17. If the contents of the two casks be mixed and 20 liters of water added to the whole what will be the proportion of wine to water in the result?
Options
A. 13 : 12
B. 12 : 13
C. 21 : 31
D. 31 : 21

9.
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?
Options
A. 600 ml
B. 710 ml
C. 520 ml
D. None of these

10.
Currants at Rs. 50 per kg are mixed with currants at Rs. 90 per kg to make a mixture of 17 kg worth Rs. 70 per kg. How many kilograms of each are taken?
Options
A. 8 kg, 9 kg
B. 8 1 kg of each 2
C. 7 kg, 10 kg
D. None of these

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