Answer:
She will sew 5.
Explanation:
I did this by taking 3/4 an hour or 45 minutes and divided by 4. That gives me the average sewing speed for one dress. Which was 11.25. Then I did 60 divide by 11.25 and you would get 5.3333. And you only count the whole number for a whole dress. So the answer is 5.
If the question is saying she is only sewing one dress and it already is 3/4 an hour. The answer is she wont have finshed that one dress within the hour