If I have a board 31 1/4 " long and want 13 stripes on it how wide will each stripe be
I'm not sure what you need -- but this is how I interpret your problem.
31.25 / 13 = 2.4038461 inches
Of course, if each stripe is that wide, there will be no space between them, so the board will just be solid white.
Now you have to decide how much blank space to allocate between the stripes, and whether the end stripes will reach to the very ends of the board, or whether there will be blank space at the ends.
To find out how wide each stripe will be, you need to divide the total length of the board by the number of stripes you want.
In this case, you have a board that is 31 1/4 inches long, and you want 13 stripes.
To find the width of each stripe, you need to divide the length of the board by the number of stripes:
31 1/4 inches ÷ 13 stripes
To make this calculation, we need to convert the mixed number (31 1/4) into an improper fraction:
31 1/4 inches = (4 * 31 + 1) / 4 inches = (124 + 1) / 4 inches = 125 / 4 inches
Now, we can calculate the width of each stripe:
(125 / 4 inches) ÷ 13 stripes
To divide fractions, you need to multiply by the reciprocal:
(125 / 4 inches) * (1 / 13 stripes)
Multiply the numerators and denominators:
125 * 1 / 4 * 13 = 125 / 52 inches
Simplifying the fraction, we can divide both the numerator and denominator by their greatest common divisor, which is 1:
125 / 52 inches = 2 21/52 or 2 3/13 inches
Therefore, each stripe will be approximately 2 3/13 inches wide.