Please help me i dont understand

Asilkworm winds its cocoon out of one long silk fiber. to make silk thread, 3 to 10 of these silk fibers are unwound from their cocoons and combined into aa single thread with a typical length of 300 yards. choose a reasonable number of silk fibers in a thread write an equation to find the total length of the silk fibersused in 300 yards of the thread

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

What is the size of the matrix resulting from