# Converting miles to minutes

1. Feb 4, 2010

### FloridaPhys

1. Convert 93x10^6 miles to minutes given that 1 km= .62 mile and that light travels at a speed of 3.0x10^8 m/s

Im having a problem processing this

2. Feb 4, 2010

### xcvxcvvc

The question is phrased clumsily. You can never convert a unit of distance into a unit of time. I assume the question means to ask, "How many minutes does it take for a particle traveling the speed of light to travel 93x10^6 miles?"

You can use pure unit conversion to think out the answer:
$$\frac{93x10^6 miles}{1} * \frac{1 km}{.62 miles} * \frac{1000 m}{1km} * \frac{1s}{3.00x10^8 m} * \frac{1 minute}{60 seconds}$$

3. Feb 4, 2010

### jahrollins

Use dimensional analysis. I believe you're trying to find the amount of time it takes for light to travel over 93x10^6 miles, thus converting from miles to minutes.

4. Feb 4, 2010

### FloridaPhys

thank you, i knew something was wrong with the question....

5. Feb 4, 2010