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If a : b = 2 : 5 , c : b = 3 : 4 , then ...

If a : b = 2 : 5 , c : b = 3 : 4 , then a : b : c is equal to :
यदि a : b = 2 : 5 , c : b = 3 : 4 है, तो a : b : c का मान ज्ञात करें |

A

`6 : 15 : 20`

B

`8 : 20 : 15`

C

` 2 : 5 : 4`

D

`2 : 5 : 3`

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