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If A : B=2:3,\ B : C=2:4\ a n d\ C : D...

If `A : B=2:3,\ B : C=2:4\ a n d\ C : D=2:5, t h e n\ A : D` is equal to `1:5` b. `2:15` c. `4:5` d. `5:2`

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RS AGGARWAL-RATIO AND PROPORTION-All Questions
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