Alligation or Mixture - Aptitude Questions and Answers Part 3

11. A pitcher contains a mixture of alcohol and water. The percentage of alcohol in the mix is 18%. The bartender decides to replace 6 Litres of the mix with mineral water and the mix now contains 15% alcohol only. Find the capacity of the pitcher.

a. 25 Litres
b. 30 Litres
c. 36 Litres
d. 45 Litres


12. Two pitchers contain a mix of alcohol and water in the ratio 5:3 and 5:11 respectively.
Equal quantity of mixture from both the pitchers is taken and added to a third pitcher. What is the ratio of alcohol and water in the mix contained in the third pitcher?

a. 13:15
b. 15:13
c. 15:17
d. 17:15


13. Gold and Copper are mixed in different proportions to form two different alloys. Alloy 1 has them in the ratio 1:3 respectively while Alloy 2 has them in the ratio 2:5. In what ratio should Alloy 1 and Alloy 2 be mixed to form a mix which has Copper and Gold in the ratio 8:3?

a. 4:7
b. 5:7
c. 7:4
d. 7:5


14. A chemical X is formed when two chemicals are mixed in the ratio 3:2 in a controlled environment. Now consider the following:

i. The first chemical is a mix of two chemical A and B in the ratio 1:3.
ii. The second chemical is a mix of same two chemicals A and B in the ratio 2:1.

What is the ratio of chemical A and B in the final chemical X?

a. 7:11
b. 11:7
c. 8:15
d. 15:8


15. A milkman makes his milk mixture by adding water to pure milk. He makes a mixture of 340 L milk with milk and water in the ratio 27:7. To meet the growing demand, he decides to further dilute the mixture with water. The new mixture has pure milk and water in the ratio 3:1. How much more water will he have to add to the previous mixture?

a. 10 litre
b. 15 litre
c. 20 litre
d. 24 litre