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If 40% of x equal 50% of y, then y : x i...

If 40% of x equal 50% of y, then y : x is:
यदि x का 40% y के 50% के बराबर है, तो y : x है :

A

`4:5`

B

`3:2`

C

`2:3`

D

`5:4`

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