Question

A remote-control travels at the rate of 10 ft per second how many inches per second is this

Answer 1

1 foot is equivalent to 12 inches

Then, to find how many inches are 10 ft, we can use the next proportion:

`\frac{1\text{ ft}}{10\text{ ft}}=\frac{12\text{ in}}{x\text{ in}}`

Solving for x:

`\begin{gathered} 1\cdot x=12\cdot10 \\ x\text{ = 120 in} \end{gathered}`

Then, the rate is 120 inches per second