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Peredhel
Hi!

We need to find the cost per ounce. 
2.10/16 = 0.13125

It costs 0.13125 per ounce. 

Now find the cost of 12 ounces. 
12 * 0.13125 = $1.58

The answer is $1.58

Hope this helps! :)
-Peredhel
XSadness
Hello.

The answer is $1.57

You would have to divide 2.10 by half to get 1.57.

Have a nice day