Answers

2015-08-10T21:54:25+08:00
If 3/10 are living tissues and the minerals are 9/20 then:
3/10 = 6/20
9/20= 9/20
6/20 +  9/20= 15/20
20-15= 5
therefore 5/20 is the fraction of the human bone is water
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2015-08-11T17:27:48+08:00
[3/10+9/20]20
6/20+9/20=15/20
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