SOLUTION: Z varies jointly as t and w. When z=60, t=2 and w=15. Find z when t=8 and w=9

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Question 1088686: Z varies jointly as t and w. When z=60, t=2 and w=15.
Find z when t=8 and w=9
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Z=ktw
60=k%282%29%2815%29
k=60%2F30
k=2
So then,
Z=2tw
Now that you know k you can solve,
Z=2%288%29%289%29