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Find x prop y and x=4 when y=2. Find y when x=18

Solution:
Your problem `->` x prop y and x=4 when y=2. Find y when x=18


`x prop y`

`=> x=K*y`

Now, `x=4,y=2`

`=> 4 = K * 2`

`=> K = (4)/(2)`

`=> K = 2`

Hence, `x=2*y`

`y=?,x=18`

`=> 18 = 2 * y`

`=> (18)/(2) = y`

`=> y = 9`






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