Answer:
(a) 75 minutes
(b) 50 minutes
(c) labeling speed = Number of books to label ÷ Time taken to finish labeling them
Step-by-step explanation:
Firstly, she has 750 books to label and she labels 10 books in a minute. Hence, the number of minutes it will take her will equal the number of books divided by the number of books labeled in a minute.
This will be 750/10 = 75 minutes
Secondly, we use the same approach here but the number of books she labeled in a minute is different. Hence we get 750/15 = 50 minutes.
Lastly, the relationship between her labeling speed and the number of minutes is shown as follows.
The speed has a unit of books/minute since it is a rate and this is equal to number of books labeled ÷ Time taken to label them
