If you take the original amount 45 and subtract the admission fee 17 you get what is left over which would be 28 dollars. Good Luck and I hope that this helps!!
I think that You add all the ages and then divide by how many people you have so
100:10 = 10 is the mean age I guess?
Width, b = 9m
length, l = 18m
<u>Explanation:</u>
Let, width = b
So, length = 2b
area = 162m
We know,
area of rectangle = length X width
So,
On solving, we get
Width, b = 9m
length, l = 18m