Two cars were driven by A and B. They were 580 miles apart when they started driving towards each other.A's car had traveled at a speed of 20 miles per hour, 4 hours per day for 5 days when it had met B's car. If B had driven 3 hours per day for days, what was B's speed in miles per hour?  Choose the correct choice from the following choices
A) 8  B) 9  C) 105  D) 11  E) 10
1. At 20mph for 4 hours a day, then driver A was traveling 80 miles per day. When A met with B, A had already traveled 400 miles.   2. This means that driver B had traveled 580-400= 
<gadget id="calculator">580-400</gadget>
<output>180</output>
180 miles upon meeting up with A. B traveled a total of 3 x 6= 18 hours (3hrs/day for 6 days). 180 miles / 18 hours = 10mph   3. Answer 10!
<result>E</result>
Two cars were driven by A and B. They were 580 miles apart when they started driving towards each other.A's car had traveled at a speed of 20 miles per hour, 4 hours per day for 5 days when it had met B's car. If B had driven 3 hours per day for days, what was B's speed in miles per hour?