22.5 miles
You would create a proportion based on the given information, then cross multiply and solve for the number of miles 1 gallon of gas can go.
Answer:
she has 40 times as many
Step-by-step explanation:
80 • 5 (80, 5 times)
80
80
80
80
+__
160+160=320 minutes
<h2>
Answer:</h2>
The probability is:
<h2>
Step-by-step explanation:</h2>
It is given that:
An urn contains balls numbered 1 through 20.
A ball is chosen, returned to the urn, and a second ball is chosen.
This means that this is a case of a replacement.
Hence, one of the event is independent of the other.
Now we know that the probability to get a particular number of ball is:
( Since, there are total 20 balls and a ball of one particular number is just unique )
i.e. 
Hence, the probability that the first and second balls will be a 8 is:
78-30=48 48\6=8 so he brought 8 friends
