Question 823972
1/2 mile : 24 seconds


2*1/2 mile : 2*24 seconds ... Multiply both sides by 2


1 mile : 48 seconds


1/48 mile : 48/48 seconds ... Divide both sides by 48.


1/48 mile : 1 seconds


3600*1/48 mile : 3600*1 seconds ... Multiply both sides by 3600 (see note below).


3600/48 mile : 3600 seconds


75 miles : 3600 seconds


75 miles : 1 hr


Answer: You are going <font color="red">75 miles per hour</font>


-------------------------------------------------------


Note: There are 60*60 = 3600 seconds in an hour