Question

How do you convert 42 miles per hour to miles per minute?

Answer 1

In 1 minute the distance traveled is 0.7 miles (`7/10` mile)

Explanation:

Using ratio in fractional format

`" "("distance in miles")/("time in hours")`

but there are 60 minutes in 1 hour so we have:

`("distance in miles")/("time in hours") ->("distance in miles")/("time in hours"xx60) = ("distance in miles")/("time in minutes")`
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Given:`" 42 miles per hour"->("distance in miles")/("time in hours")->42/1`

in minutes this is: `42/(1" hour")=42/(1xx60)=42/(60" minutes")`

But we need 1 minutes so we have to change the 60 minutes to 1 minute.

For multiply and divide, what we do to the bottom we also do to the top to maintain the correct ratio.

`42/60" "-=" "(42-:60)/(60-:60) = (0.7)/1->("miles")/("minutes")`

In 1 minute the distance traveled is 0.7 miles (`7/10` mile)