Answer:
There are 3 rotten carrots among the 21 carrots at the store.
Explanation:
If for every 7 carrots at the store, 2 are rotten, we can calculate the number of rotten carrots by finding one-seventh of the total number of carrots.
Let's break it down:
Number of rotten carrots per 7 carrots = 2
Number of carrots at the store = 21
To find the number of rotten carrots, we calculate one-seventh of the total number of carrots:
Number of rotten carrots = (1/7) * 21
Number of rotten carrots = 3