Correct Answer : D
Ratio of the earnings of A and B is 4 : 7. If the change of A increase by 50% and those of B decrease by 25%, the new ratio of their earnings becomes 8 : 7. What are A’s earnings?
A vessel is filled with liquid, 3 parts of which are water and 5 parts syrup. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?
When a number is added to another number the total becomes 33 1/3 percent of the second. What ratio between the first and the second?