From 5A=4B: A:B=4:5. From 7B=3C: B:C=3:7. From 2C=7D: C:D=7:2. Combining: A:B:C=12:15:35, and extending A:B:C:D=12:15:35:10. Therefore A:D=12:10=6:5.
If 5A=4B, 7B=3C and 2C=7D, then A : D is :
Held on 5 Jun 2023 · Verified 13 Jul 2026.
5 : 6
5 : 7
2 : 1
6 : 5
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