Answer:
Lucas sold 37 boxes
Step-by-step explanation:
Let the no. of boxes sold by Lucas be x
Nancy sold 18 fewer boxes than Lucas
So, Nancy sold boxes = x-18 --- 1
We are given that Nancy have sold 19 box in total ---2
Equate 1 and 2
So,[tex]x-18 = 19[/tex]
[tex]x = 19+18[/tex]
[tex]x = 37[/tex]
Hence Lucas sold 37 boxes
