so, what is the total lenght of the pieces that wer cut off?
we multiply the lenght by the number:
4 [tex] \frac{1}{3} [/tex]*5=20+[tex] \frac{5}{3} [/tex]=21[tex] \frac{2}{3} [/tex]
and we subtract this from the original pipe, that is
30[tex] \frac{3}{4} [/tex]-21[tex] \frac{2}{3} [/tex]
we need to bring the two fractions to the same denominator (by multiplying the fraction art in the first by 3 and 4 the second):
30[tex] \frac{9}{12} [/tex]-21[tex] \frac{8}{12} [/tex]=9 [tex] \frac{1}{12} [/tex]
so the correct answer is D!
