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If x : y = 1 : 3, y :z = 5 :k, z : t = 2...

If `x : y = 1 : 3, y :z = 5 :k, z : t = 2:5` and `t:x = 3:4`, then what is the value of k ?

A

`1//2`

B

`1//3`

C

2

D

3

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