SOLUTION: can someone help me pls? solve. if y varies directly as x, and x=12 when y=5, find x when y=3

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Question 469629: can someone help me pls?
solve.
if y varies directly as x, and x=12 when y=5, find x when y=3
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

y varies directly as x OR

 y = kx   |y=5 when x=12

 5 = k*12

 5/12 = k

 y =(5/12)x  | y = 3  THEN  x = (12/5)*3 = 36/5