Answer:
oh my :o
Ok so just mutiply
Step-by-step explanation:
Whenever you have the answers for TOTAL MILES RUN and HOW MANY HOURS RUN (which you do), just divide the total miles by the amount of hours!
So, do 231 / 10.5
This is equal to 22!
There is a 25% decrease because the decrease is 30, which is 25% of 120.
Area of a square with side s is

In your question, the side or s is:

And so the area of a square with that side length would be:

And using this formula:

We get that the area is:

And simplifying that we get the final answer as:
If it takes him 90 minutes to read 5 and a half chapters, it would take him 16.36 minutes to read one chapter.