Answer:
72 dentists
Step-by-step explanation:
In this case, we can multiply 80 by 9/10 or .9 to get our answer.
If we were to multiply by 9/10 it would look like this:
But, if we were to multiply by .90 (remember that 9/10 = .9) it would look like this:
Therefore, if 9 out of 10 dentists recommended PurWhite toothpaste and 80 were surveyed then 72 out of the 80 would have recommended it.
<em>I hope this helps!!</em>
<em>If you have any questions feel free to ask!</em>
<em>- Kay :)</em>