SOLUTION: five out of every seven households have cable tv. if 42,000 households in a certain city have a tv, how many do not have cable tv?

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Question 272946: five out of every seven households have cable tv. if 42,000 households in a certain city have a tv, how many do not have cable tv?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
%285%2F7%29=%28X%2F42000%29
42000%2F7=6000 so if we multiply by a common 1 6000%2F6000
%285%2F7%29%286000%2F6000%29=30000%2F42000
so 30000 homes have cable so 42000-30000=12000
highlight%2812000%29 homes dont have cable