1.

If a : b = 2/9 : 1/3, b : c = 2/7 : 5/14 and d : c = 7/10 :3/5,thenfind a : b : c : d

Answer»

`4:6:7:9:8`
`16:24:30:35`
`8:12:15:7`
`30:35:24:16`

ANSWER :B


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