What are the possible lengths of the 4 roads in kilometres?

e.g. The length of the 4 roads are:

**x km, x km, x-7 km, 6 km**
Check:

**x + x + (x - 7) + 6 = 3x - 1**Enter your suggested lengths in comments.

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(12x - 4) km

ReplyDeleteCheck: (3x) x4

=12x

Check: 1x4

=4

Minimum is x=8

ReplyDelete8 x 3 - 1 = 23

8 + 8 + ( 8 - 7 ) + 6 = 23