The sum of 3 consecutive even numbers is 78 what are the numbers
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OPTION B.

Step-by-step explanation:

You need to remember that a product is the result of a multiplication.

Let be the number mentioned in the problem "x", "the product of seventeen and a number" means that:

 Now "twelve more than the product of seventeen and a number" indicates that you need to add 12 to .

Therefore, you can write the phrase in the following mathematical expression:

or  

This matches with the option B.