Set up a proportion. If 9 meters makes 24 bows, then x meters makes 16 bows.
x= # meters needed to make 16 bows
9 meters/24 bows= x meters/16 bows
cross multiply
(9*16)= (24*x)
144= 24x
divide both sides by 24
6= x
OR ALTERNATE METHOD
Find how much is needed per bow and multiply by 16 bows.
=9 meters ÷ 24 bows
=0.375 meters per bow
=0.375 * 16 bows
=6 meters needed
Use whichever method you are more comfortable with
ANSWER: It takes 6 meters to make 16 bows
Hope this helps! :)