Answer: 64.8 mph
Step-by-step explanation:
Given
Arriving time is 6 hours
return time is 4 hours
The average speed of returning 81 mph
Distance traveled while returning

the average speed of the entire trip is

Your answer would be 24 marbles. This is because if you add up all the number of pulls, you get 20, which means we would need to multiply all of the results by 3 to see how many pulls you would get in a bag of 60, and so 8 x 3 = 24. I hope this helps,
Answer:
The mean is 12.
Step-by-step explanation:
Add all the given numbers
7 + 14 + 15 + 9 + 11 + 14 + 11 + 10 + 17
Which equals to 108
You divide 108 by the total numbers added which in this case is 9.
108/9 = 12
Hope this helps :)