If a 10-pound turkey cost $20.42 how much does a 21-pound turkey cost

First divide $20.42 by 10 to find the cost of 1 pound/16 ounce turkey.

Dividing, this gives us 2.042.

Now, to find the cost of a 21-pound turkey, we multiply

the cost of 1 turkey by 21 to get 42.882.

So a 21-pound turkey is $42.882.