There are 100 eggs in a box. If 10% of the eggs are rotten, then the number of rotten eggs are ____.
Number of eggs = 100
% of rotten eggs = 10
Number of rotten eggs = 10100×100 = 10
∴ 10 eggs are rotten.
If there are 20 rotten eggs and 100 good ones, the probability of selecting a rotten egg is 0.2.