Directions: There are 4 jars A, B, C and D having mixture of milk and water in it. Ratio of milk and water in these mixtures are 7 ∶ 13, 4 ∶ 1, 1 ∶ 3 and 11 ∶ 9.
If the quantity of water in jar C was 21.6 litres more than the quantity of milk in jar D and sum of quantity of milk in jar C and the quantity of water in jar D is 189.6 litres, then find the quantity of water that should be mixed in jar D to get a new mixture having 36% milk.
How many gallons of each of a 4% and an 11% acid solutions should be mixed to obtain 35 gallons of a 7% solution?
1). 20 gallons, 15 gallons
2). 22 gallons, 13 gallons
3). 13 gallons, 22 gallons
4). 15 gallons, 20 gallons
One quality of wheat at Rs. 9.30 per kg is mixed with a higher quality wheat in the ratio 8 ∶ 7. If the mixture so formed costs Rs. 10 per kg, what is the rate per kg of the second quality of wheat?
1). Rs. 10.30
2). Rs. 10.60
3). Rs. 10.80
4). Rs. 11
In a mixture of 40 litres, the ratio of milk and water is 3 : 2. How many litres of milk must be added to make the ratio 4 : 1?
1). 45
2). 40
3). 35
4). 30
How many litres of water should be added to a 30 litre mixture of milk and water containing milk and water in the ratio of 7 : 3 such that the resultant mixture has 40% water in it?
1). 2 litres
2). 5 litres
3). 7 litres
4). 9 litres