Answer:
The number of banana splits sold was [tex]28[/tex]
Step-by-step explanation:
Let
x-----> the number of sundaes sold
y-----> the number of banana splits sold
we know that
[tex]2x+3y=156[/tex] -----> equation A
[tex]x=y+8[/tex] ----> equation B
substitute equation B in equation A and solve for y
[tex]2(y+8)+3y=156[/tex]
[tex]2y+16+3y=156[/tex]
[tex]5y=156-16[/tex]
[tex]5y=140[/tex]
[tex]y=28[/tex]