During a race, bernie ran 9 meters every 4 seconds, while wendel ran 2 meters every second and got a 9-meter head start. if the race was 70 meters long, did bernie ever catch up with wendel in the race?

No, because Bernie had to run 9 meters 7.77777778 time (70/9) and each of those 9-meter sections took 4 seconds, so her time was 31.1111111 (7.77777778*4). While Wendel had to run 61 meters 70-his headstart (9 meters) (70-9). So he only had to run 30.5 blocks of 2 meters (61/2). And since they're only 1 second long, it's 30.5*1=30.5. The answer then is NO because (Bernie) 31.1111111 seconds > 30.5 seconds (Wendel).

Your cleary not see the answer is 25