Justin has 20 pencils 25 erasers and 40 paper clips. he organizes them into groups with the same number of items in each group. all the items in a group will be the same type. how many items can he put in each group?

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?