Amillion
2

# a piece of wood is 180cm long, Tom cuts it into three pieces in the ratio 2:3:4 Work out the length of the longest piece

$The\ ratio\ is:2:3:4\\ Let's\ sum\ up\ it:\\ 2+3+4=9\\ \frac{2}{9}*180=40\\ \frac{3}{9}*180=60\\ \frac{4}{9}*180=80\\ The\ longest\ piece\ has\ lenth=80cm$