## Basic College Mathematics (10th Edition)

$120$ rows
We know that Akuba knits 5 cm of scarf in 6 rows. We figure out how many rows would equal 100 cm with a proportion: $\displaystyle \frac{5~cm}{6~rows}=\frac{100~cm}{x~rows}$ We cross-multiply: $5*x=100*6$ $5x=600$ $x=600/5$ $x=120$ rows