find the compound ratio of sub duplication ratio and sub triplicate ratio of 729:64
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The subtriplicate ratio of a:b is
3
a
:
3
b
.
∴ The subtriplicate ratio of 64:729 is
3
64
=
3
729
=
3
(4)
3
:
3
(9)
3
=4:9.
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