Question

th 2. Derick went to the store to buy a new hover board. The hover board costs $60 but today, he will get a discount of 6.5%. How much money will Derick save? (1 Point) * $390 $53.50 $3.90

Answer 1

To solve the exercise you can use a rule of three:

`\begin{gathered} \text{ \$60 }\rightarrow100\text{\%} \\ \text{ \$x }\rightarrow6.5\text{\%} \end{gathered}`
`\begin{gathered} x=\frac{6.5\text{\%}\cdot\text{ \$60}}{100\text{\%}} \\ x=\frac{6.5\cdot\text{\$60}}{100} \\ x=\text{\$}(6.5\cdot60)/(100) \\ x=\text{\$}(390)/(100) \\ x=\text{\$}3.9 \end{gathered}`

Therefore, Derick will save $ 3.9.