Answer:
33%
Step-by-step explanation:
Odd numbers take the form
, where
is an integer. When
, the last odd number would be 799. So we're adding

By reversing the order of terms, we have

and we can pair up terms in both sums at the same position to write

so that we are basically adding 400 copies of 800, and from there we can find the value of the sum right away:

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We could also make use of the formulas,


We have

Y^2/2560x^12z^14........................................
GIVEN:
total length of the banner = 30 ft.
perimeter of the banner = 96 ft.
total width of the rectangle = ?
Let,
the perimeter be "p"
the length be "L"
the width be "w"
We know,
Perimeter (P) of a rectangle = 2 (L + w)
Substituting the values of P, L and w , we get,
96 = 2 (30 + w)
96 / 2 = 30 + w
48 = 30 + w
48 - 30 = w
18 = w
So, the width of the rectangular banner is 18 ft.