Answer:
Cost for White ribbon are $0.166 each.
Step-by-step explanation:
Given
[tex]\textrm{Cost of each Red ribbon} = $9[/tex]
[tex]\textrm{Number of Red ribbon} = 3[/tex]
[tex]\textrm{Total Cost of Red ribbon} = 9 \times3 = $27[/tex]
[tex]\textrm {Cost of each white ribbon}=x[/tex]
[tex]\textrm{Number of White ribbon} = 6[/tex]
[tex]\textrm{Total Cost of white ribbon} =6x[/tex]
[tex]\textrm{Total Money Spent} = $ 28[/tex]
[tex]\textrm{Total Money Spent} = \textrm{Total cost of red ribbon}+ \textrm{Total cost of white ribbon}[/tex]
[tex]28=27+6x[/tex]
[tex]6x= 28-27[/tex]
[tex]6x=1[/tex]
[tex]x=\frac{1}{6}[/tex]
[tex]x=0.166[/tex]
