Which number sentences show ways to solve the problem?

The 9 members of a conservation club purchased a total of 45 tree saplings. Each member bought the same number of trees to plant in the community. Each tree cost $15. How much did each member pay for the trees?

Choose all answers that are correct.

A.

15 * 9 = 135 and 135 - 75 = 60

B.

3 * 15 = 45 and 45 + 15 = 60

C.

45 : 9 = 5 and 5 * 15 = 75

D.

45 * 15 = 675 and 675 : 9 = 75

must choose more than one answer