Question

a factory makes rods by cutting plastic pipes that are 4 feet long into 7 equal sized rodshow long is each rod?what is the total length of 15 rods?

Answer 1

As a fraction, length of the 15 rods = 8 4/7 feet

As decimal, length = 8.57 feet

Step-by-step explanation:

initial length pipes = 4 feet

Dividing the length of the pipe into 7:

`\begin{gathered} length\text{ }of\text{ each rod = }\frac{initial\text{ length}}{7\text{ parts}} \\ length\text{ }of\text{ each rod }=(4)/(7)\text{feet} \end{gathered}`

length of 15 of those rods:

`\begin{gathered} \text{length = 15 }*\text{ length of each rod} \\ \text{length = 15 }*\text{ }(4)/(7) \end{gathered}`
`\begin{gathered} length\text{ of 15 rods = }(60)/(7) \\ Total\text{ length of 15 rods = 8}(4)/(7)\text{ or 8.57 f}eet \end{gathered}`