Two cars were driven by W and B. They were 580 miles apart when they started driving towards each other.W'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 5 days, what was B's speed in miles per hour?
Choose the correct option: A) 8 B) 9 C) 10 D) 11 E) 12
1. At 20mph for 4 hours a day, then driver W was traveling 80 miles per day. When W met with B, W 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 W. B traveled a total of 3 x 5= 15 hours (3hrs/day for 5 days). 180 miles / 15 hours = 12mph   3. Answer 12!
<result>E</result>
Two cars were driven by W and B. They were 580 miles apart when they started driving towards each other.W'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 5 days, what was B's speed in miles per hour?