Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point Sacha overtakes Bruno. If five minute afterward, Sacha stops and waits for Bruno to reach him, then how many seconds does he have to wait? Select the correct option: A) 12 B) 24 C) 36 D) 60 E) 72
the difference of the speed is 1m per second so in five minute Sacha will be 300 m ahead of Bruno..   Bruno will cover this in  300/5= 
<gadget id="calculator"> 300/5</gadget>
<output>60</output>
60 secs..   60
<result>D</result>
Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point Sacha overtakes Bruno. If five minute afterward, Sacha stops and waits for Bruno to reach him, then how many seconds does he have to wait?