A mixture of milk and water contains 75% milk. If 8 liters of the mixture is taken out and 7 liters of milk is added, the ratio of milk to water becomes 7 : 2. Find the volume of the initial mixture.

Two numbers are, respectively, 10% and 25% more than the third number. The ratio of the two numbers is:

The sum of the squares of two natural consecutive odd numbers is 394. The sum of the numbers is –

The graphs of the linear equations 3x-2y=8 and 4x+3y=5 interest at the point P(α, β). What is the value of (2 α - β)?

Present ages of Parth and Abhishek are in the ratio of 5 : 4 respectively. Three years hence, the ratio of their ages will become 11 : 9 respectively. What is Abhishek 's present age in years?

Directions: Read the below data carefully and answer the following questions.
The table shows the total number of ice cream (Chocobar + Cornetto) was given by Santa Claus on the day of Xmas to 5 children. It also shows the number of Chocobar ice-creams is how much more or less percentage of the total number of Cornetto ice-creams.

What is the difference between the entire number of Cornettos Arun and Kiran have and therefore the total number of Chocobars Barun and Rumi have?

The mean weight of 34 students of a school is 42 kg. If the weight of the teacher be included, the mean rises by 400 grams. Find the weight of the teacher (in kg.) 

The value of $$3{2\over7}+14{4\over9}+5{3\over9}$$ is: