Practice MCQ Questions and Answer on Alligation
51.
Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety in the ratio 1 : 1 : 2. If the mixture is worth Rs. 153 per kg, the price of the third variety per kg will be:
- (A) Rs. 169.50
- (B) Rs. 170
- (C) Rs. 175.50
- (D) Rs. 180
52.
An alloy contains copper and tin in the ratio 3 : 2. If 250 gm of copper is added to this alloy then copper in it becomes double the quantity of tin in it. What is the amount (in gm) of tin in the alloy?
- (A) 250
- (B) 750
- (C) 1000
- (D) 500
53.
An amount of Rs. 680 was invested at 6% rate of interest and another sum of money was invested at 10% interest. If the average interest on the total at the end of the year was 7.5%, how much was invested at 10%?
- (A) Rs. 408
- (B) Rs. 412.6
- (C) Rs. 267.5
- (D) None of these
54.
A and B are two alloys of gold and copper prepared by mixing metals in the ratio 5 : 3 and 5 : 11 respectively. Equal quantities of these alloys are melted to form a third alloys C. The ratio of gold and copper in the alloy C is -
- (A) 25 : 13
- (B) 33 : 15
- (C) 15 : 17
- (D) 17 : 15
55.
3 L water is taken out from vessel full of water and substituted by pure milk. This process is repeated two more times. Finally, the ratio of milk and water in the solution becomes 1728 : 27. Find the volume of the original solution.
- (A) 3 L
- (B) 5 L
- (C) 4 L
- (D) 9 L
56.
In what ratio should sugar costing Rs. 40 per kg he mixed with sugar costing Rs. 18 per kg. So as to earn a profit of 20% by selling the mixture at Rs. 54 per kg?
- (A) 3 : 5
- (B) 4 : 7
- (C) 5 : 8
- (D) 2 : 3
57.
In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 kg?
- (A) 3 : 7
- (B) 5 : 7
- (C) 7 : 3
- (D) 7 : 5
58.
The ratio of the quantities of sugar, in which sugar costing Rs. 20 per kg and Rs. 15 per kg, should be mixed so that here will be neither loss nor gain on selling the mixed sugar at the rate of Rs. 16 per kg, is -
- (A) 2 : 1
- (B) 1 : 2
- (C) 4 : 1
- (D) 1 : 4
59.
A can contains a mixture of two liquids A and B is the ratio 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?
- (A) 10
- (B) 20
- (C) 21
- (D) 25
60.
A container has 20% milk and 80% water in it. It is mixed with another sample (inequal quantity) having 80% milk and 20% water. What would be the milk content in the final mixture?
- (A) 80%
- (B) 100%
- (C) 50%
- (D) 60%