$\left[\begin{array}{ll}{[\text { Arithmetic. Mental calculation, etc. }]} \\ {[\text { Word problems (miscellaneous) }]}\end{array}\right]$

The length of the crocodile from head to tail is three times less than ten ken, and from tail to head it is three ken and two shaku. It is known that one shaku is equal to 30 cm. Find the length of the crocodile in meters. (Ken and shaku are Japanese units of length.)
According to the condition, the tripled length of the crocodile is 9 ken and 6 shaku or 10 ken. Therefore, 1 ken = 6 shaku = 180 cm. The length of the crocodile is 3 ken 2 shaku, which is 600 cm.

## Answer

6 m.