Answer:
→ Distance run by dean = 6.8 km .
also,
→ Distance run by dean = 2.3 fewer kilometers than Sam.
Let us assume that, distance run by same is s km .
so,
→ Distance run by dean = s - 2.3
therefore,
→ s - 2.3 = 6.8
→ s = 6.8 + 2.3
→ s = 9.1 km .
Hence, The correct equation is s – 2.3 = 6.8
Step-by-step explanation: