# Web Development Exercise 4-5

Feb 1st, 2015
Anonymous
Category:
Programming
Price: \$5 USD

Question description

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:

\$DistanceA = ((\$SpeedA / \$SpeedB) * \$Distance) /
(1 + (\$SpeedA / \$SpeedB));
\$DistanceB = \$Distance - \$DistanceA;
\$TimeA = \$DistanceA / \$SpeedB;
\$TimeB = \$DistanceB / \$SpeedB;
In the preceding equations, \$DistanceA and \$DistanceB are the distances traveled by Trains A and B, respectively.; \$TimeA and \$TimeB are how long trains and A and B traveled, respectively(\$Time A should equal \$TimeB). If \$SpeedA or \$Speed B is allowed to be 0, php will display a division by zero not allowed" error.
Save the document as TWoTrains.php directory for chapter 4.

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