Fiona bought x boxes of oranges. There were 10 oranges in each box. When the boxes were opened, she found that p oranges were spoilt. She decided to distribute the good oranges into 20 container. Write an expression, in terms of x and p, for the number of oranges in each container.

The total number of oranges Fiona bought is x * 10 = 10x.

The total number of good oranges is 10x - p.
Therefore, the number of oranges in each container is (10x - p)/20.

To find the expression for the number of oranges in each container, we need to start with the total number of oranges and then divide by the number of containers.

The total number of oranges is given by the product of the number of boxes, x, and the number of oranges in each box, 10. So the total number of oranges is 10x.

However, some oranges were spoiled, p in total. Therefore, the total number of good oranges is 10x - p.

Next, we need to distribute the good oranges into 20 containers. To find the number of oranges in each container, we divide the total number of good oranges by the number of containers. Therefore, the expression for the number of oranges in each container is:

(10x - p) / 20

To find the number of oranges in each container, we need to calculate the total number of good oranges and divide it by the number of containers.

The total number of oranges is given by the equation:
Total Oranges = x (number of boxes) * 10 (oranges in each box)

Since p oranges were spoiled, the number of good oranges is:
Good Oranges = Total Oranges - p

Finally, the number of oranges in each container is:
Number of Oranges in each container = Good Oranges / 20

Combining all the expressions, we get:
Number of Oranges in each container = (x * 10 - p) / 20