Jawapan

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2016-04-25T13:38:48+08:00
A) a:b:c=7:8:19
b) a:b:c
(6:8)×9
(9:8)×8
(54:72:64)÷2 =27:36:32
c)400g:300g
600g:1000g
800g:600g:1000g