In what proportion must a grocer mix sugar at Rs. 12 a kg and Rs. 7 a kg so as to make a mixture worth Rs. 8 a kg.?
7 : 12
1 : 4
2 : 3
2 : 3
49 kg of blended tea contains Assam and Darjeeling tea in the ratio 5 : 2. Then the quantity of Darjeeling tea to be added to the mixture to make the ratio of Assam to Darjeeling tea 2 : 1 is
4.5 kg
3.5 kg
5 kg
5 kg
A mixture contains spirit and water in the ratio of 3 : 2. If it contains 3 litre more than water, the quantity of spirit in the mixture is
12 litre
10 litre
9 litre
9 litre
A merchant buys 25 litre of milk daily at the rate of â¹ 12 per litre. He mixes 5 litre of water in it and sells at the rate of â¹ 10.40 per litre. His gain/loss is
8% profit
2% profit
4% profit
6% profit
In a mixture of 25 litres, the ratio of milk to water is 4 : 1. Another 3 litres of water is added to the mixture. The ratio of milk to water in the new mixture is
5 : 1
5 : 2
5 : 3
5 : 4
A drum of kerosene is full. When 30 L of kerosene is drawn from it, it remains full. The capacity of the drum is
120 L
135 L
150 L
180 L
D.
180 L
Let the capacity of the drum is x L.
Then, according to the question,
A can contain a mixture of two liquids A and B in the ratio 7 : 5. When 9 L of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. Litres of liquid A contained by the can initially was
10
20
21
25
An alloy contains copper, zinc and nickel in the ratio of 5 : 3 : 2. The quantity of nickel in kilogram that must be added to 100 kg of this alloy to have the new ratio 5 : 3 : 3 is
8
10
12
15
A container has 80 L of milk. From this container, 8 L of milk was taken out and replaced by water. The process was further repeated twice. The volume of the milk in the container after that is
58.23 L
85.23 L
58.32 L
85.32 L
15 L of a mixture contains alcohol and water in the ratio 1 : 4. If 3 L of water is mixed in it, the percentage of alcohol in the new mixture will be
15
17