Sara can type 90 words in 4 minutes. about how many words would you expect her yo type in 10 minutes at this rate.?

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?

Ineed ! what is the connection between ratios, fractions, and percents? give an example with your answer.