Q&A for How to Calculate Unit Rate

It will take Becky 5 hours to bike 125 miles.

The unit cost of something is its price divided by its weight. For example, if something that weighs 2 pounds costs $3.00, its unit cost is $3.00 divided by 2 pounds, or $1.50 per pound.

If it takes 6 cups of flour to make 4 pancakes, it takes 1½ cups to make 1 pancake. So the unit rate is 1½ cups per pancake. Multiply the unit rate by 10 pancakes to calculate the answer: (1½)(10) = 15 cups of flour.

The rate of sugar per teaspoon of vanilla is simply twice the rate of sugar per ½ teaspoon of vanilla. Twice 2/3 cup is 4/3 or 1 1/3 cups of sugar per tsp of vanilla.

If the total price is 4.99, the unit price is 4.99/64 = 0.07797, which can be rounded up to 0.08.

The unit rate would be 4/132 = 1/33, or 1 pie in 33 seconds. If you want the rate of pies-per-second, it's 1/33 of a pie per second.

Use proportions. Multiply the numbers by the diagonal and divide by the last remaining number (For example, x/1 = 2/4, 2*1 = 2, 2/4 = 0.5. So, x = 0.5).

A ratio is often a comparison of one abstract number to another. A rate is a comparison of one unit of measurement to another (say, amounts of money, weights, volumes or objects).

.2 mile per minute equals (.2)(60) = 12 miles per hour. 35 minutes is 35/60 of an hour. Her distance traveled in 35 minutes is (speed)(time) = (12)(35/60) = 7 miles.

The initial ratio is $3.75 : 750 g. Divide both terms by 750 so that the second term will be 1 g. That results in a unit rate of $0.005 / g, or one-half cent per gram.

(4/6):(1/3) = (2/3):(1/3) = 2:1.

240 yards = 720 feet. 1 hour = 3600 seconds. 720 feet / 3600 seconds = 0.2 foot / 1 second = 0.2 ft per seconds.

First you need to change 50 minutes to 60 minutes (1 hour). Do that by adding 10 minutes, which is 1/5 of 50. That means you have to add 1/5 of 18 to 18 miles. 1/5 of 18 is 3.6. 18+3.6=21.6. So the unit rate is 21.6 miles per hour. Get the same result by cross-multiplying: 18 / 50 = x / 60. (18)(60) = (50)(x). 1080 = 50x. x=21.6 miles.

7 fragments is to 100 fragments as 500 tons is to how many tons? Thus, 7 / 100 = 500 / x. By cross-multiplying, 7x = 50,000. x = 50,000 / 7 = 7142.8 or 7143 tons.

Math is what it is. Whether or not it's "hard" is a matter of opinion. It seems that a person born with the ability to think logically or linearly does not usually struggle with math as much as a person born with other abilities. It also seems that a person not born with a "math brain" is unlikely in later life to use math very much. Pursuing good grades in school is another discussion.

Set up a fraction with the total cost as the numerator (top number) and the total number of items as the denominator (bottom number).

Set up the equation: 3 mi / 5 mi = 27 min / x min ("3 miles is to 5 miles as 27 minutes is to x minutes.") Then cross-multiply and solve for x. (3)(x) = (5)(27). 3x = 135. x = 45 minutes.

Set up the equation: 100 / 250 = x / 60. ("100 grams is to 250 grams as x is to 60.") Then cross-multiply and solve for x: (100)(60) = (250)(x). 6000 = 250x. x = 24. 100g costs R24.

While not every ratio actually refers to a rate, every ratio could be thought of as expressing a rate. For example, the ratio 3 : 8 could be seen as meaning three units per every eight units.

Assuming the velocity of the car remains the same, if you multiply the amount of time by 4, you would multiply the distance by 4: 8x4 = 32 miles.

You take the total area and divide it by the length and width [divide it by the height if included as well]. And then you can find the UR of the figure. In other words, you are finding the area of each cube in the figure.