A car travels 240 km in 4 hours. How long does it take the same car to travel 480 km?

Properties of Ratio and Proportion

The ratio of the cost of a tennis racket to tennis balls is 18:1. If a can of balls cost

$5.35, what is the cost of the racket?

If a quantity is divided in the ratio 5 : 7, the larger part is 84. Find the quantity.

If a jogger runs 2 miles and burns 185 calories, how many calories would he burn jogging 3 miles

Georgia drove a total of 252 miles and used 12 gallons of gasoline. What is this rate in miles per gallon?

A bag contains tomatoes that are either green or red. The ratio of green tomatoes to red tomatoes in the bag is 4 to 3. When five green tomatoes and five red tomatoes are removed, the ratio becomes 3 to 2. How many red tomatoes were originally in the bag?

The angles of a quadrilateral ABCD taken in an order are in the ratio 3 : 7 : 6 : 4. Then ABCD is a

If a, b,c are 3 side of △ABC中 such that (b+c):(c+a):(a+b) = 4:5:6, then the maximum internal angle of △ABC is

A group of 24 students was polled as to whether they enjoy biology class, chemistry class, both, or neither. The results are shown in the table below:

\begin{array}{|c|c|c|} \hline &\text{Biology}&\text{Chemistry} \\ \hline \text{Enjoy} &14&18 \\ \hline \text{Don't Enjoy }&10&6 \\ \hline \end{array}