Question

a:b=7:8 and b:c=21:25 hence find a:b:c

Answer 1

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Answer 2

a:b=a/b =7/8 and b:c=21/25

first we see b in a:b=7:8 and second we see b in b:c=21:25
in first b=8 and in second b=21

so we convert into like
a:b=7:8×21 and b :c=21×8:25
hence
a:b:c=7:168:25