A teachers chocolate is 60 ounces for $7.20. A students chocolate is 75 ounces for $8.25. Which one is cheaper per ounce?

What is the probability of rolling a single die greater than 4

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.

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.