Math : Mixture & Allegation ( Ratio & proportion)
SUB:- Mixture & Allegation
1.Two vessels contain milk and water in the ratio 3:1 and 5:3 respectively. In what ratio these to be mixed to prepare a third mixture containing milk and water in the ratio 2:1?
A)1:2
B)2:1
C)1:1
D)none of these
2. An alloy contains 90% copper and 10% tin. Another alloy has 93% copper and 4%tin. In what ratio these to be mixed so that the mixture must have 9% tin?
A)5:1
B)1:5
C)2:7
D)none of these
3. In what ratio, a grocer can mix tea leaves of Rs.10 per kgand Rs. 15 per kg to make a mixture of Rs.12 per kg?
A)3:2
B)2:3
C)3:4
D)none of these.
4.How many ml of water must be added to 48ml of alcohol to make a solution that contains 25%alcohol?
A)48
B)64
C)144
D)192
5.In a mixture of 45litres, the ratio of milk and water is 3:2 . How much water must be added to make the ratio
9:11?
A)10 Litres
B)15 Litres
C)17Litres
D)20Litres
6. A mixture contains spirit and water in the ratio 3:2. If it contains 3 litres more spirit than water, the quantity of spirit in the mixture is:
A) 10 liters
B)12Litres
C)8Litres
D)9Litres
7. A jar contain 10 red marbles and 30 green ones. How many red marbles must be added to the jar so that 60% of the marbles will be red
A)25
B)30
C)28
D)40
8. The ratio of Milk & Water in two containers are 7 :4 and 8:3. If they are mixed in the same quantities in the third container then what is the ratio of milk & water in third container?
a) 2:3
b) 15 :7
c) 11 : 7
d) 7 : 4
9. The ratio of milk and water in 3 container are 5 :3, 7 :1, 13:3. If these containers have same volume and they are mixed in fourth container then what is new ratio of milk and water?
a) 25 : 7
b) 37 : 11
c) 13 : 3
d) 12 : 7
10. In the two mixture A and B Zinc, Tin, Lead are in the ratiratio 6 :4 : 5 and 1 : 3 : 1 respectively. OF these two alloys are mixed
together taking equal quantities from each to make a new
water contains 25 % water . What quantity of water should be taken out so that new mixture contains 10 % water?
a) 10 liter
b) 40 liter
c) 50 liter
d) 30 liter
18. 80 liter of wine and water mixture contains 60 % wine . What quantity of water should be added so that new mixture contains 50 % wine.
a) 96 liter
b) 80 liter
c) 40 liter
d) 16 liter
19. A 100 litre solution of milk and water contains water and milk in the ratio 1:4. 10% of solution is removed and Replaced by milk twice, in succession. What would be the quantity of water in the
resultant solution.?
A)16Litres
B)18Litres
C)16.8Litres
D)16.2Litres
20. A 20L mixture contains milk and water in the respective ratio of 3:2. If 10L of the mixture is removed and replaced with Pure milk and the operation is repeated once more. At the end of the two removals and replacement, then what is the ratio of milk and water in the resultant mixture respectively?
A)17:3
B)9:1
C)4:17
D)5:3
E)3:14
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