Answer:
90 recipes
Step-by-step explanation:
we know that
Fiona posted a total 216 recipes in 36 weeks
using proportion
Find out how many recipes did she upload in 15 weeks'
Let
x -----> the number of recipes
[tex]\frac{216}{36}\frac{recipes}{weeks}=\frac{x}{15}\frac{recipes}{weeks} \\\\x=216*15/36\\\\x= 90\ recipes[/tex]