SOLUTION: If y varies as x and y=100 when x=10 and z=5, find y when x=12 and z=6. Thanks

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Question 43865: If y varies as x and y=100 when x=10 and z=5, find y when x=12 and z=6.
Thanks
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
The direct relationship is written as
y = kxz
Now plug in to find k...
100 = k(10)(5)
k = 2
Now rewrite using the new k and find y with the new x and z...
y = 2xz
y = 2(12)(6)
y = 144