Question

The cost of a laptop computer decreased from $600 to $480. By what percentage did the cost of the computer decrease?

Answer 1

`\begin{gathered} \text{Percentage decrease =} \\ \frac{\text{initial value - new value}}{\text{initial value}}*100 \end{gathered}`

Initial value= $600

new value = $ 480

`\begin{gathered} =(600-480)/(480)*100 \\ =\text{ }(120)/(480)*100 \\ =\text{ 25\%} \end{gathered}`

25% decrease is the answer