Two heavily loaded sixteen-wheeler transport trucks are 787 kilometers apart, sitting at two rest stops on opposite sides of the same highway. Driver A begins heading down the highway driving at an average speed of 90 kilometers per hour. Exactly one hour later, Driver B starts down the highway toward Driver A, maintaining an average speed of 80 kilometers per hour. How many kilometers farther than Driver B, will Driver A have driven when they meet and pass each other on the highway? Choose the correct choice from the following
A) 90	B) 131	C) 150	D) 320	E) 450
I've been reading the website for a while and I'm always keen to see different approaches so I would like to share one that works for me:   Short version:   Truck A travels for an hour.   Distance remaining = 787-90= 
<gadget id="calculator">787-90</gadget>
<output>697</output>
697k   Ratio of speeds 9:8 -&gt; 697/17= 41   Truck A = 90 + 41*9= 
<gadget id="calculator">90 + 41*9</gadget>
<output>459</output>
459   Truck 131= 41*8= 
<gadget id="calculator">41*8</gadget>
<output>328</output>
328   Delta= 131km   Answer 131
<result>B</result>
Two heavily loaded sixteen-wheeler transport trucks are 787 kilometers apart, sitting at two rest stops on opposite sides of the same highway. Driver A begins heading down the highway driving at an average speed of 90 kilometers per hour. Exactly one hour later, Driver B starts down the highway toward Driver A, maintaining an average speed of 80 kilometers per hour. How many kilometers farther than Driver B, will Driver A have driven when they meet and pass each other on the highway?