In a 100-meter sprint, runner A finishes 25 meters ahead of runner B, and runner B finishes 4 meters ahead of runner C. By how many meters does runner A beat runner C in the same race?

Explanation

Since A beats B by 25 meters, when A finishes 100 meters, B has run 75 meters. Similarly, since B beats C by 4 meters, when B runs 100 meters, C runs 96 meters. Combining these ratios, when A finishes 100 meters, C runs 72 meters (0.75 × 0.96 × 100). Therefore, A beats C by 28 meters.