well if 1 meter is ten tenths then 0.9 metres (90 cm) would be the answer but if 5 metres was the whole thing then the answer would be 4.5 metres (450 cm). thus without knowing what ten tenths are (100%) i cannot give an acurate answer but using the following information you should be able to figure out the answer though if this seems a little vague , then please add more information to the question and i will be happy to oblige. :)
4.5 meters = 45 tenths of a meter
There are 9 tenths in 9 tenths.
16 tenths of a meter equals 1.6 meters
2.5 tenths.
10 and 4 tenths metres = 10.4 metres.
4000
9
Three-tenths of a meter.
90/100 is 9 tenths.
3/100 of a mile
400 meters = 0.24855 miles.
Answer: .2 mi. = 321.868 m