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Question

If A:B=2:3 and B:C=4:5 then C:A=?


A

6:8

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B

8:15

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C

8:5

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D

15:8

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Solution

The correct option is D

15:8


As it is given that, A:B=2:3 and B:C=4:5

A:B=2:3AB=23A=2B3

Also, B:C=4:5

BC=45CB=54C=5B4

Now, CA=5B42B3=5B4×32B=158

C:A=15:8

Hence, correct option is (b).


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