Math
posted by Anonymous .
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?

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MathMate
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?
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