3rd grade math 1
posted by Anonymous on .
an averagasided female spider and a large spider can lay a total of 2100 eggs at one time. the large spider lays 20 times the number of eggs as the average sized spider. how many eggs does the average side spider lay?

As+Ls=2100
Ls=large spider as=average sized spider
Ls=20As
so
as+20as=2100
21as=2100
as=100
The average sized spider lays 100 eggs at one time 
let the no. of eggs laid by average side spider=x
given, 20x= 2100
divide both sides by 20
20x/20 = 2100/20
x =105
. .
. the no. of eggs laid by an average side spider = 105 eggs