First, let's convert 1 km 125 m into metres. 1 km = 1000 m 1.125 km - 1,125 m
On Tuesday, Eric biked 375 metres fewer than on Monday. 1125 - 375 = 750 m Eric biked 750 m on Tuesday. On both days he biked 1125 + 750 = 1,875 m or 1 kilometre and 875 metres