Study the following information to answer these questions:
In a school consisting of 2800 children, the ratio of girls to boys is 4:3 respectively. All the children have taken
different hobby classes viz. Singing, Dancing, Painting and Cooking. 20 per cent of the boys take Painting classes.
The number of girls taking dancing classes is five-fourth of the number of boys taking the same. One-fourth of the
girls take cooking classes. The total number of students taking cooking classes is 700. Two fifth of the boys take
singing classes and the remaining boys take dancing classes. The girls taking singing classes is twice the number
of boys taking the same. The remaining girls take painting classes.
The number of boys taking cooking classes is what per cent of the total number of children in the school?

The ratio of two numbers is 14:25. If the sum of the two numbers is 390, find the larger number.

If  $$\frac{x}{y} = \frac{4}{3}$$​ then $$\frac{x-y}{x+y} =$$​​

If x : 12 :: 4 : 6 then x value is

A vendor mixed 6.3 kg of peanuts, 2100 g of dates, 3.6 kg of cashews and packed the mixture equally into two and half dozen packets. The weight (in grams) of each packet is

The ratio of boys to girls in a school is 5:6. If there are 1100 students in total, find the number of boys.

The ratio of the number of students in Class A to Class B is 4:5. If 8 students are transferred from B to A, the ratio becomes 5:6. Find the original number of students in each class.

If (9x - 3y) = 96 and 4x : 3y = 20 : 21, then find the value of (2x² + 3y²).

Three numbers are in the ratio 2:3:5, and their sum is 100. Find the difference between the largest and smallest numbers.

Which ratio is the largest among 5 : 12, 14 : 31, 8 : 33 and 17 : 39?

A number when increased by 25% becomes equal to another number, which is 20% less than a third number. What is the ratio of the first number to the third number?