Question

If A:B=3:4,B:C=5:7,C:D=8:9 find A:B:C:D

Answer 1

Answer:

A : B, B : C, C : D

3 : 4, 5 : 7, 8 : 9

AB=34,BC=57,CD=89

AB×BC×CD=>34×57×89

=> 1021

A : D = 10 : 21

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Answer 2

Answer:

Refer the attachment

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