Question

If A : B = 1 : 2, B : C = 3 : 4 and C : D = 5 : 6, find D : C : B : A​

Answer 1

Answer:

If A:B=1:2, B:C=3:4, C:D=6:9, D:E=12:16

A:B:C

1:2

3:4

3:6:8

Now A:B:C:D

3:6:8

6:9

18:36:48:72=3:6:8:12

Now A:B:C:D:E

3:6:8:12

12:6

36:72:96:144:72=3:6:8:12:6

So A:B:C:D:E=3:6:8:12:6

Step-by-step explanation:

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Answer 2

Answer:

SHORT METHOD

A. B. C. D

1. 2

3. 4

5. 6

----------------------------------------------------------

15. 30. 40. 48

(1x3x5). (2x3x5). (2x4x5). (2x4x6)

D:C:B:A = 48:40:30:15