# Hiking trail

The newly built hiking trail leads 25% through the field, 3/8 of the trail leads through the forest and the remaining 9 km along the river. How long is the train?

x =  24 km

### Step-by-step explanation:

0.25 x + 3/8•x + 9 =x

0.25•x + 3/8•x + 9 =x

3x = 72

x = 24

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