Question

An expression to convert 50 miles per hour to miles per minute is shown.


`(50 miles )/(1 hour)` ×
`(1 hour)/(x minutes)`



What value can be put in x to correctly make this conversion?

Answer 1

x = 60

Explanation:

We have to convert 50 miles per hour to miles per minute.

Now, we know that 1 hour = 60 minutes

So, we can write

`50mph=(50miles)/(1hr)`

This can be further written as when converted to miles/min.

Use 1 hour = 60 minutes

`50miles/min=(50miles)/(1hr)*(1hr)/(60 min)`

Comparing with the given expression, we get

x = 60

Answer 2

`x = 60`

Explanation:

To convert from miles per hour to miles per minute we must convert hours to minutes.

We know that in 1 hour there are 60 minutes,

Then we use the following conversion factor.
`(1\ hour)/(60\ minutes)`

Finally the expression will be:

`(50\ miles)/(1\ hour)*(1\ hour)/(60\ minutes)`

Then notice that:

`x = 60`