Question

Debra has ridden 6 miles of a bike course. The course is 15miles long. What percentage of the course has Debra ridden so far

Answer 1

From the question

Miles covered for bike course = 6 miles

Total miles of course = 15 miles

In percentage, this becomes

Let z = percentage of miles covered

Hence

`z=\frac{\text{miles covered}}{Total\text{ miles}}*100\text{\%}`

Substitute in the values to get

`z=(6)/(15)*100\text{\%}`

Simplify:

`\begin{gathered} z=(2)/(5)*100\text{\%} \\ z=2*20\text{\%} \\ z=40\text{\%} \end{gathered}`

Therefore, the percentage of the course Debra has ridden so far is 40%