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A bottle contains spirit and water in the ratio 1 : 4 and another identical bottle contains spirit and water in the ratio 4 : 1. In what ratio should the mixtures in the two bottles be mixed to get a new mixture in which the ratio of spirit to water is 1 : 3?
CDS I 2024
5 : 1
6 : 1
10 : 1
11 : 1
Two glasses of equal volume are filled with a mixture of alcohol and water in the ratio 3 : 2 and 4 : 1, respectively. These glasses are emptied into a third glass. What is the ratio of alcohol and water in the third glass?
CDS II 2022
5 : 4
7 : 2
7 : 3
7 : 4
In a mixture of 70 kg, the ratio of sand and cement is 4: 1. How much sand should be added to the mixture so that the ratio of said and cement in it becomes 6: 1?
67th [RE] BPSC
28 kg
30 kg
32 kg
None of the above
A milkman mixes 30 liters of water with 70 liters of milk. After selling one fourth of this mixture, he adds water to replenish the quantity that he has sold. What is the current proportion of water to milk?
