Arithmetic

If a bag contains red and blue marbles in ratio 3:5, and there are 24 red marbles, how many blue marbles are there?

Ratio of 1 dozen to 1 score is:

The ratio of the area of a circle to its radius squared is always:

Simplify $1/2 : 1/3$.

If $x:y = 1:2$, find the value of $(2x+y)/(x+2y)$.

A mixture contains milk and water in the ratio 4:1. If there is 20L of milk, find the quantity of water.

The ratio of $2^3$ to $2^2$ is:

What number must be added to each term of 2:5 to make it 1:2?

If $a:b = 2:3$ and $b:c = 4:5$, then $a:b:c$ is:

Divide Rs 1200 among A, B, and C in the ratio 2:3:5. What is B's share?

The ratio of ages of Ram and Shyam is 4:5. If the sum of their ages is 81 years, what will be the ratio of their ages after 9 years?

In a map, 2cm represents 50km. What is the actual distance if the map distance is 7cm?

The ratio of boys and girls in a school is 7:5. If there are 2400 students in total, how many more boys are there than girls?

If $x:y = 3:4$, find the value of $(5x - 2y) : (7x + 2y)$.

Two numbers are in the ratio 3:5. If 10 is added to each, the ratio becomes 5:7. Find the numbers.

The ratio of incomes of A and B is 9:4 and their expenditures are in the ratio 7:3. If each saves Rs 2000, find A's income.

A mixture of 60 liters contains milk and water in ratio 2:1. How much water must be added to make the ratio 1:2?

The ratio of the radii of two cylinders is 2:3 and the ratio of their heights is 5:4. Find the ratio of their volumes.

If $x/2 = y/3 = z/5$, then the ratio $(x+y+z)/z$ is:

A sum of money is divided between P, Q, R in ratio 3:5:7. If Q's share is Rs 1500, what is the total sum?