Brenda and Sally run in opposite direction on a circular track, starting at diametrically opposite points. They first meet after Brenda has run 100 meters. They next meet after Sally has run 100 meters past their first meeting point. Each girl runs at a constant speed. What is the length of the track in meters? Choose the correct choice from the following choices:  A) 250  B) 300  C) 350  D) 400  E) 500
Nice problem. +1.   First timetogetherthey run half of the circumference.   Second timetogetherthey run full circumference.   First time Brenda runs 100 meters, thus second time she runs 2*100= 
<gadget id="calculator">2*100</gadget>
<output>200</output>
200 meters.   Since second time (when they run full circumference) Brenda runs 200 meters and Sally runs 100 meters, thus the circumference is 200 + 100= 
<gadget id="calculator">200 + 100</gadget>
<output>300</output>
300 meters.   Answer: 300.
<result>B</result>
Brenda and Sally run in opposite direction on a circular track, starting at diametrically opposite points. They first meet after Brenda has run 100 meters. They next meet after Sally has run 100 meters past their first meeting point. Each girl runs at a constant speed. What is the length of the track in meters?