Question

J bought a watch for $y and sold it at 15%. Write and expression for the selling price

Answer 1

The cost price of the watch is $y.

The expression for the loss is,

`\begin{gathered} loss=y*(15)/(100) \\ =0.15y \end{gathered}`

The selling price can be determined as,

`\begin{gathered} SP=CP-\text{loss} \\ =y-0.15y \\ =0.85y \end{gathered}`

Thus, 0.85y is the correct answer.