# Cottage house

The village is 28 km from the cottage. Father goes from village to cottage. Son goes from the cottage to the village. They meet 10 km further behind the cottage. How much did dad walk?

Result

x =  18 km

#### Solution:

$x = 28 - 10 = 18 = 18 \ \text { km }$

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#### Following knowledge from mathematics are needed to solve this word math problem:

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