2. If A:B=2:3 and B:C=7:1 find A:B:C
please tell me ..
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Answer:
L.C.M of B's =21
(A:B=2:3)×7
(B:C=7:1)×3
A:B=14:21
B:C=21:3
A:B:C=14:21:3
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