Asked by Minnie

A man lost Rs 3 on every bottle of medicine he sold. Find his gain on selling 7 bottles of this medicine?
Answered by PsyDAG
If he loses "Rs 3" on every bottle, there is no gain. Have you omitted some data?
Answered by Minnie
In our textbook it's -Rs12
So what is the formula for finding the answer
Answered by Steve
His gain on selling one bottle is -3, sohis gain on selling x bottles is just

-3x

Now plug in x=7

I get -21, not -12.
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