18.小红和小强同时从家里出发相向而行。小红每分走52米, 小强每分走70米, 二人在途中的A处相遇。若 小红提前4分出发, 且速度不变, 小强每分走 90 米, 则两人仍在A处相遇。小红和小强两人的家相距多少 米?

Step 1 ：1. Set up two equations based on the given information: \(52t + 70t = D\) and \(52(t+4) + 90t = D\)

Step 2 ：2. Solve the system of equations to find the value of D: \(D = \frac{6344}{5}\) meters

Step 3 ：3. Final Answer: \(\boxed{1268.8}\) meters