Answer:
The milkshake costs $2.85
Step-by-step explanation:
b = price of a burger
m = price of a milkshake
We know that [tex]10b+7m=50.95\\[/tex]. We also know that [tex]m+0.25 =b[/tex].
So, let's substitute!
[tex]10(m+0.25)+7m=50.95\\10m+2.5+7m=50.95\\17m+2.5-2.5=50.95-2.5\\17m=48.45\\m=\frac{48.45}{17}\\m=2.85\\[/tex]
The milkshake costs $2.85
