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Answer 6 1 Page 5: 0.4 = 6: x x: 1 = 4/5.
1, 1800÷5/6 = 2 160 yuan 2 160×5/4 = 2700 yuan. The answer is 2700 yuan (I don't know if 5/6 means 6/6 or 5/6).

2、280÷3/5 =

I doubt that your score is wrong. Note that you entered 4/ 1, that is, four times three-fifths of the B-stack goods can't be separated. You may have hit five-thirds, so I'm not sure about one or two questions. I will do it after your reply. There are also six questions that I can't do wrong. )

3. Then I'll make 45×3 = 135km 135÷ five sevenths =189km45× 7 = 315km3189 = the answer (myself

4,6/1I'll go to one sixth. 1- (one sixth× 2) = one quarter 20÷ 4 = 55× 6 = 30kg30-20 =10kg.

Answer B: 10kg or more, 30kg.