# Quantitative Aptitude: Mixture and Alligation Questions Set 12

1. A sum of Rs 118 was shared among 50 males and females ,each female receive Rs 2.60 and male receives Rs 1.80.Find the number of females?
30
35
25
40
28
Option B
No of femlaes=7/10 * 50 = 35

2. A mixture contain 88% of nitrate,another mixture contain 70% of nitrate.In order to get 84% of nitrate,in what ratio these two must be mixed?
5:2
7:2
7:9
5:3
None of these
Option B

3. In what ratio coke be mixed with water costing Rs 12 per litre to obtain a mixture worth of Rs 8 per litre?
1:2
2:3
3:8
2:5
None of these
Option A
12-8=4
8-0=8
Ratio=4:8

4. In what proportion must juice be mixed with water to gain 40% by selling it at cost price?
2:3
3:8
2:5
1:5
None of these
Option C
Ratio=40:10=2:5

5. 400 grams solution has 30% water in it,What is the ratio of water should be added to make it 80% in the solution?
3:4
2:5
1:8
1:5
None of these
Option B
100-80-=80
80-30=50

6. X and Y are two alloys of germansium and ceremic in the ratio 6:3 and 4:7.Equal quantities of this alloys mixed mixed to form a new alloy.The ratio of germansium and ceremic in the new aloy is which of the following?
21:20
17:16
22:23
19:23
None of these
Option B
Germansium in first mix=6/9
Germansium in second mix=4/11
Ceremic in first mix=3/9
Ceremic in second mix=7/11
Ratio in new alloy={(6/9)+(4/11) } / {(3/9)+(7/11)}

7. In what ratio shopkepeer mixes two varieties of rice costing Rs 25 and Rs 30 per kg to get a mix worth Rs 28.75?
1:2
2:3
1:5
1:3
None of these
Option D

8. A sum of Rs 96 was shared among 48 males and females,each female receives Rs 2.40 and male receives Rs 1.80.How much amount did males received?
38
32
42
45
48
Option B
No of boys =2/3 *48 = 32

9. Two variesties of spirit are mix in ratio 4:5.The price of first variety spirit is Rs 14 per litre while the second variety is Rs 17 per litre.Find the average price of the mixtire?
Rs 16.75
RS 15.40
Rs 16.45
Rs 15.67
None of these
Option D
Let X be average price of mixture
x-14/17-x = 5/4
4x-56=85-5x
5x+4x=85+56
9x=141
x=15.67

10. A shopkeeper has two qualities of silver.one of 10 carats and other one of 5 carats purity.In what ratio should he mix both to make an necklace of 8 carats purity?
1:2
3:2
2:3
4:5
None of these
Option B

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