Ratios

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity of one item by the quantity of another item, typically expressed per one unit of the second item.

Front

If a train travels 240 miles in 4 hours, what is its speed in miles per hour?

Back

The speed is 60 miles per hour, calculated by dividing 240 miles by 4 hours.

Front

How do you find the total output based on a given rate?

Back

Multiply the rate of output by the total time or quantity to find the total output.

Front

What is the formula to find the cost per item?

Back

Cost per item = Total cost / Number of items.

Front

If you earn $35 for washing 7 cars, how much do you earn per car?

Back

You earn $5 per car, calculated by dividing $35 by 7 cars.

Front

What is the relationship between the number of cars washed and the earnings?

Back

The relationship is linear; as the number of cars washed increases, the earnings increase proportionally.

Front

How do you determine the price of a single item from a bulk purchase?

Back

Divide the total price by the number of items purchased.

Front

What is the ratio of green marbles to red marbles if there are 3 green marbles for every 1 red marble?

Back

The ratio is 3:1.

Front

How can you express a ratio in fractional form?

Back

A ratio can be expressed as a fraction by placing the first quantity over the second quantity.