[tex]\left \{ {{S=14+L} (I) \atop {S+L=124}(II)} \right.[/tex]
Substitute (I) into (II), we have:
[tex]S+L=124[/tex]
[tex](14+L)+L=124[/tex]
[tex]14 + 2L = 124[/tex]
[tex]2L = 124 - 14[/tex]
[tex]2L = 110[/tex]
[tex]L = \frac{110}{2} [/tex]
[tex]\boxed{L = 55}[/tex]
Replace (II) in (I), we have:
[tex]S=14+L[/tex]
[tex]S = 14+ 55[/tex]
[tex]\boxed{S = 69}[/tex]
Answer:
each student sell:
Lori = 55 pizzas
Steve = 69 pizzas
