Last Time Revision (Mixture and Allegations)-2

1) A milkman uses three containers for the selling milk , their capacities being 40L, 30L and 20L respectively. He fills respectively 87.5%, 80% and 90% of the container with the mix of milk and water in the ratio 3:2, 5:1 and 7:2 respectively. What is the ratio of the total quantity of milk to that of water carried by him ?
a)  7:2 b) 31:12 c) 35: 9 d) 5:2

2) In what ratio must a mixture of 20% milk be mixed with that of 60% milk strength so as to get a new mixture 25% milk strength?
a)  7:1 b) 4 :1 c) 5 :2 d) 9:2

3) 20kg of a mixture of wheat and husk contains 5% husk . How many kilograms more of husk must be added to make the husk content 20% in the new mixture ?
a) 2.75  b) 3.75 c) 4. 75 d) 5.75

4) In an alloy aluminium and tin are in the ratio of 4:5. In the second alloy, the ratio of same elements is 4:7. If equal quantities of these two alloys the mixed to form a new alloy, then what will be the ratio of both of the pae elements in the new allloy?
a) 2:3 b) 16:35 c) 4:5 d) 40:59

5) 

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