Average speed of Car 1 = 35 mph. Average speed of Car 2 = 55 mph. Time elapsed between start of Car 1 and start of Car 2 = 18 minutes. How long before Car 2 overtakes Car 1?
___ hour.
0.33
0.53
0.43

Question

Average speed of Car 1 = 35 mph. Average speed of Car 2 = 55 mph. Time elapsed between start of Car 1 and start of Car 2 = 18 minutes. How long before Car 2 overtakes Car 1? 
___ hour. 
0.33 
0.53 
0.43

anonymous · Answer

Distance Car 1 = Distance Car 2..............this will be true when they meet
 35(t+18/60) = 55t ....................solve for t. Answer will be in hours.