8. (1) Ifa: b=5 : 7 and b: c = 14:15, find a : c.
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Answer:
a = 2 and c = 3
Step-by-step explanation:
A:B=5:7
B:C=14:15
A:B:C={A×B : B×B : B×C}
A:B:C=70:98:105
A:C = 70 : 105
=14:21
=2:3
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