Answer:
[tex](1+\frac{60}{100})x[/tex]
and
[tex](1+0.6)x[/tex]
Step-by-step explanation:
The cost price is [tex]x[/tex] dollars.
The marked up price [tex]\frac{60}{100} x[/tex]
The selling price is [tex]x+\frac{60x}{100}[/tex]
This is the same as [tex](1+\frac{60}{100})x[/tex]
This can again be written as [tex](1+0.6)x[/tex]
All this are equivalent because [tex]1.6x[/tex]
