Q&A for How to Make a Ratio

Reduce the fraction 200/75 to the lowest terms possible. Dividing each number by 25 gives you the fraction 8/3. That's the ratio you're looking for (because it won't reduce any further). So 200:75 is the same ratio as 8:3.

x:y:z.

Add together the numbers of the ratio: 4 + 5 = 9. Divide 9 into the total number of marbles: 126 ÷ 9 = 14. Multiply 14 by 4 and 14 by 5 to get 56 and 70. Those are the numbers of green and clear marbles respectively.

9:1

Choose any letter to represent it.

Consider it as a fraction: 3400 / 8423. Reduce the fraction to the lowest terms possible. That gives you the ratio you're looking for. It's roughly 17:42.

You would have to know the diameter, then multiply by 3.

If you want to divide 180 into two numbers whose ratio is 2:3, do this: add 2 + 3 = 5. Divide 180 by 5 = 36. Multiply 36 by 2, which is 72. Multiply 36 by 3, which is 108. 72 and 108 are the two numbers you're looking for.

The ratio is simply 1,703 : 11,777. You can't reduce or simplify that ratio, because no number will divide evenly into both of those numbers.

The easiest way to do this is to recognize that the ratio of your mangoes to total mangoes is 3:8. Then set up the proportion 3 / 8 = 120 / x, where x is the total number of mangoes. Cross-multiply: 3x = (8)(120) = 960, so that x = 320. To check the answer, if the total is 320, and you have 120, that means your friend has 200, and the ratio of 120:200 does indeed reduce to 3:5.

You're asking how many times larger than 3 is 5. 5 is 2 larger than 3. 2 is 2/3 of 3. That means that 5 is 2/3 larger than 3.

Multiply both terms of the ratio by a multiple of ten in order to eliminate the decimal point (without changing the value of the ratio), and then reduce if possible (again leaving the value unchanged). For example, you could take the ratio 2.5 : 7.5, and multiply both terms by ten to get rid of the decimals: the ratio becomes 25:75, which reduces to 1:3.

A ratio of 1:3 means that for every one of the first item or number, there are three of the second item or number.

Because 3.1 is exactly ten times smaller than 31, their ratio is 1:10.

Using that ratio, you could make this much mix: 15 kg cement, 45 kg sand, and 75 kg gravel (with some sand and gravel left over). Whether that is enough mix depends on the requirements of the job.

To find an equivalent ratio, multiply or divide the numbers in the original ratio by any other number. For example, say the original ratio is 6:4. You could multiply that ratio by any number, such as 3, giving an equivalent ratio of 18:12. You could also divide the original ratio by any number, such as 2, giving another equivalent ratio of 3:2.

You would cross-multiply to find the answer. Let x be the number of cups of chocolate needed. Then 12 / 5 = 8 / x. Cross-multiply: (12)(x) = (5)(8) = 40. So x = 40/12 = 10/3 = 3 1/3 cups of chocolate.

The ratio in simplest form is 50 min : 1 kg.

Before you can calculate that, you have to know the price of each pizza.

At first A has 5x coins and B has 3x. After the transfer A has (5x+8) coins and B has (3x-8) coins. The new ratio is 11/5 = (5x + 8) / (3x - 8). Find x by cross-multiplying: (11)(3x - 8) = (5)(5x + 8). So 33x - 88 = 25x + 40. Then 8x = 128, and x = 16. So A started with 5x = 80 coins, and B started with 3x = 48 coins. The coin total is 80 + 48 = 128 coins. (After the transfer A had 88 coins and B had 40. 88:40 is in the ratio of 11:5.)

You can write it just as you've written it, or write 0.8 inch per hour (or 0.8 : 1 if you don't want to use the units).

600 centiliters = 6 liters, so 600 cl : 10 liters = 6 : 10 = 3 : 5.

156% = 156 / 100 = 156 : 100 = 39 : 25.

Let x be the original number of boys. Then 3x/4 is the original number of girls. The new number of boys is x-6, and the new number of girls is [(3x/4) - 4]. We're told that the new ratio of girls to boys is 4/5 = [(3x/4) - 4] / (x - 6). Cross-multiply to solve for x: (4)(x - 6) = (5)[(3x/4) - 4]. Then 4x - 24 = (15x/4) - 20. Multiply both sides of that equation by 4 to get rid of the fraction: 16x - 96 = 15x - 80. Subtract 15x from both sides, and add 96 to both sides: x = 16. So originally there were 16 boys and (3/4)(16) = 12 girls. Now there are 16 - 6 = 10 boys and 12 - 4 = 8 girls. 8/10 = 4/5.

If you multiply each number by 2, you will eliminate the fractions without changing the value of the ratio. It becomes 11 : 5.

Let x be the number of girls. Then 5/4 = 250/x. Cross multiply: 5x = (4)(250) = 1000. Divide both sides by 5: x = 200 girls.

91% = 91/100 = 91:100.

The ratio is simply 5:4.

120 : 2 = 60 : 1.

There are one million cubic centimeters in one cubic meter. Therefore the ratio here is 10 cm³ : 1 m³ = 10 cm³ : 1,000,000 cm³, which reduces to 1 : 100,000.