Create an All-in-One sticky form to solve the common two trains are moving toward each other word problem. The form should have three inputs, all numbers greater than 0: the speed of Train A ($SpeedA), the speed of Train B ($SpeedB), and the distance between the two trains ($Distance). For this problem, you will need the following equations:

In the preceding equations, $DistanceA and $DistanceB are the distances traveled by Trains A and B, respectively; $TimeA and $TimeB are how long Trains A and B traveled, respectively ($TimeA should equal $TimeB). If $SpeedA or $SpeedB is allowed to be 0, PHP will display a division by zero not allowed error.