janvierek, here is how I figured it out.
I wrote the equation x meters/sec = y kms/hour
Now I have to solve for y. To get y by itself, multiply both sides by the hour, just like you normally would any algebraic equation:
(x meters * 1 hour)/sec = y kms
Since I have an hour on top and seconds on the bottom, I converted the hour to seconds so they would cancel:
(x meters * 3600seconds)/sec = y kms and the seconds cancel leaving:
3600 * x meters = y kms Now to isolate the y, I need to divide by the kms, but convert it to meters so the meters will cancel:
3600xmeters/1000meters=y
36x/10=y
y=18x/5
I hope that makes sense. People on here are so good at math I often can't see the shortcuts they take.
