Answers

2015-08-27T19:57:14+08:00
If 1kg = 1000g, then 7kg = 7000g.
  450 : 7000
  45 : 700 (divide by 10)
  9 : 140 (divide by 5)
Therefore, the ratio of 450g to 7kg is 9:140 or 9/140.

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