Answer:
The total number of polo shirts is 50
Step-by-step explanation:
Let
x -----> the number of white polo shirts
y -----> the number of blue polo shirts
we know that
[tex]x=y+18[/tex] -----> equation A
[tex]68\%=68/100=0.68[/tex]
[tex]x=0.68(x+y)[/tex] ------> equation B
substitute equation A in equation B and solve for y
[tex]y+18=0.68(y+18+y)\\ y+18=0.68(2y+18)\\ y+18=1.36y+12.24\\ 1.36y-y=18-12.24\\ 0.36y=5.76\\ y=5.76/0.36\\ y=16\ blue\ polo\ shirts[/tex]
Find the value of x
[tex]x=16+18=34\ white\ polo\ shirts[/tex]
Find the total number of polo shirts
[tex]x+y=34+16=50\ polo\ shirts[/tex]
