an average sized female spider and a large spider can lay 2,100 egs at one time. The large spider lays 20 times the number of eggs as as the average sized spider. How many eggs does the average sized spider lay?

Altogether the two spiders lay 21 times the number of eggs of an average spider, and that equals 2100.

So an average spider lays 2100/21=100 eggs.

How many eggs does the large spider lay?

To find out how many eggs the average sized spider lays, we can start by setting up a variable for the number of eggs laid by the average sized spider. Let's call it "x".

According to the given information, the large spider lays 20 times the number of eggs as the average sized spider, which means the large spider lays 20x eggs.

We also know that the total number of eggs laid together by the average sized spider and the large spider is 2,100.

So, the equation we can write is: x + 20x = 2,100.

Combining like terms, we get: 21x = 2,100.

To solve for x, we can divide both sides of the equation by 21: x = 2,100 / 21.

Performing the division, we find: x = 100.

Therefore, the average sized spider lays 100 eggs.