A fast food restaurant sells two sizes of fries, small and large. On friday they sold 81 fries total. If 9 of the fries were small, what is the ratio of large fries sold to small fries sold?

Respuesta :

Answer:

The ratio of large fries sold to small fries sold is [tex]8[/tex]

Step-by-step explanation:

Let

x------> the number of large fries sold

y-----> the number of small fries sold

we know that

[tex]x+y=81[/tex] ------> equation A

[tex]y=9\ small\ fries\ sold[/tex] -----> equation B

Substitute equation B in equation A

[tex]x+9=81[/tex]

[tex]x=81-9=72\ large\ fries\ sold[/tex]

Find the ratio

[tex]\frac{x}{y}=\frac{72}{9}=8[/tex]

Answer:

72:9

Step-by-step explanation: