if i can drive 40 miles in 30 minutes how far can i drive in 1 hour

Question

If i can drive 40 miles in 30 minutes how far can i drive in 1hour 

Answer 1

"40 miles in 30 minutes" is written as (40 mi / 30 min).  What is that in mi/hr?   We need the conversion factor:

                    1 = ( 6o minutes / 1 hour ) 

              [because we can multiply by 1 and not change the value, only the units]

 

   (40 miles / 30 min) * ( 60 min / 1 hr )                [note: min cancel out, leaving only hr]

                80 miles/hour

Answer 2

 

 

40 miles/ .5 hours= 80 miles per hour

 

 

Consult the rate, time, and distance relationship.