The value of $$x$$ where $$x$$ : $$2\frac{1}{3}$$ :: $$21$$ : $$50$$ is -

A mixture contains milk and water in the ratio 5 : 1. On adding 5 litres of water, the ratio of milk and water becomes 5…

The ratio between the third proportional of 12 and 30 and mean proportional of 9 and 25 is -

A mixture contains alcohol and water in the ratio of 4 : 3. If 5 litres of water is added to the mixture the ratio becom…

$$\frac{7}{5}{\text{of }}58 + \frac{3}{8}{\text{of }}139.2 =\, ?$$

Income of A and B are in the ratio 4 : 3 and their annual expenses are in the ratio 3 : 2. If each save Rs. 60000 at the…

Harsha is 40 years old and Ritu is 60 years old. How many years ago was the ratio of their ages is 3 : 5 ?

Total number of men, women and children working in a factory is 18. They earn Rs. 4000 in a day. If the sum of the wages…