Answer:
Use [tex]3[/tex] times as many boxes of rice
Step-by-step explanation:
we know that
Using proportion
[tex]\frac{4}{13}\frac{boxes}{people}=\frac{x}{39}\frac{boxes}{people} \\ \\x=39*4/13\\ \\x=12\ boxes[/tex]
original quantity of boxes -----> [tex]4[/tex]
boxes needed -----> [tex]12[/tex]
[tex]12=3*(4)[/tex]
therefore
Use [tex]3[/tex] times as many boxes of rice
