SOLUTION: Tina and Jane can paint an apartment in 5 hours together. If Tina can do the same job alone in 7 hours, how long will it take jane to finish alone??

SOLUTION: Tina and Jane can paint an apartment in 5 hours together. If Tina can do the same job alone in 7 hours, how long will it take jane to finish alone??

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Question 833868: Tina and Jane can paint an apartment in 5 hours together. If Tina can do the same job alone in 7 hours, how long will it take jane to finish alone??
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/7+1/j=1/5
5/7+5/j=1
5/j=2/7
2j=35
j=17.5

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