1.
Milk and water are mixed in the ratio 4 : 1 to form solution 'A' and in the ratio of 3 : 2 to form solution B. A man takes equal quantities of solutions A and B and mixes them together. What is the ratio of quantities of milk to that of water in the mixture so formed?
 A.3 : 7
 B.1 : 1
 C.7 : 3
 D.3 : 2
 Answer & Explanation
Answer : [C]
Explanation :
Explanation :
Let the quantities of solutions of type A and B be 100 litres each. Thus solution A contains 80 litres milk and 20 litres water. Similarly solution B contains 60 litres milk and 40 litres water. When these are mixed, the total quantity of milk and water is 140 and 60 litres.  


2.
Two litres of mixture of sprit and water contains 12% water This is added to 3 litres of another mixture of sprit and water containing 5% of water. Find the percentage of water in the resulting mixture.
 A.7%

C.
7 3 5 
B.
7 4 5 
D.
7 2 5
 Answer & Explanation
Answer : [B]
Explanation :
Explanation :












3.
300 gm of sugar solution has 40% sugar in it. How much sugar should be added to make it 50% in the solution?
 A.60 gm
 C.80 gm
 B.70 gm
 D.40 gm
 Answer & Explanation
Answer : [A]
Explanation :
Explanation :
The existing solution has 40% sugar. More salt is to be mixed to make 100% sugar solution. So, by alligation method: 











4.
To a 50 litre mixture containing water and milk in the ratio 2 :3, 30 litre of milk is added. What is the ratio of milk : water in the resultant solution?
 A.3 : 1
 B.2 : 1
 C.1 : 3
 D.1 : 2
 Answer & Explanation
Answer : [A]
Explanation :
Explanation :






5.
A seller has 50 kg of rice, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. What is the quantity sold at 18% profit?
 A.20 kg
 B.25 kg
 C.40 kg
 D.30 kg
 Answer & Explanation
Answer : [D]
Explanation :
Explanation :









