Create solver_distance_rate_time.py

solver_distance_rate_time.py

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+from __future__ import annotations
+
+import re
+from typing import Optional
+
+from models import SolverResult
+
+
+def solve_distance_rate_time(text: str) -> Optional[SolverResult]:
+
+    lower = text.lower()
+
+    if "speed" not in lower and "distance" not in lower:
+        return None
+
+    nums = [float(x) for x in re.findall(r"\d+(?:\.\d+)?", lower)]
+
+    if len(nums) < 2:
+        return None
+
+    # simple pattern: speed and time given
+    if "speed" in lower and "time" in lower:
+
+        speed = nums[0]
+        time = nums[1]
+
+        distance = speed * time
+
+        return SolverResult(
+            domain="quant",
+            solved=True,
+            topic="distance_rate_time",
+            answer_value=f"{distance:g}",
+            internal_answer=f"{distance:g}",
+            steps=[
+                "Use the formula distance = speed × time.",
+                f"Multiply {speed} by {time}."
+            ]
+        )
+
+    # simple pattern: distance and speed given
+    if "distance" in lower and "speed" in lower:
+
+        distance = nums[0]
+        speed = nums[1]
+
+        if speed == 0:
+            return None
+
+        time = distance / speed
+
+        return SolverResult(
+            domain="quant",
+            solved=True,
+            topic="distance_rate_time",
+            answer_value=f"{time:g}",
+            internal_answer=f"{time:g}",
+            steps=[
+                "Use the formula time = distance ÷ speed.",
+                f"Divide {distance} by {speed}."
+            ]
+        )
+
+    return None