Question:If `2A = 3B` and `4B = 5C`, then `A : C` is : 

A `4 : 3` 
B `8 : 15` 
C `15 : 8` 
D `3 : 4` 

+ Answer
C 

+ Explanation
`A/B = 3/2` and

`B/C = 5/4`.

`:. A/C = A/B xx B/C`

 `= 3/2 xx 5/4`

 `= 15/8`.

so, `A : C = 15 : 8`

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Md. Habib Ullah

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