Question 438764: One week 10 copies of the novel The DaVinci Code by Dan Brown were sold for every 1.9 copies of John Grogan's Maryley and Me that were sold. If a total of 3570 copies of the two books were sold, how many copies of each were sold? What are d(m) where d= # of copies of davinci code sold and m= # of copies of Marley sold. Graph the tho functions(m) in the same plane.
I know how to get the answer to how many copies are sold but lost on the rest
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! One week 10 copies of the novel The DaVinci Code by Dan Brown were sold for every 1.9 copies of John Grogan's Maryley and Me that were sold. If a total of 3570 copies of the two books were sold, how many copies of each were sold?
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10:1.9 is the same as 10x:1.9 where 10x is # of DC sold
and 1.9x is # of MM sold.
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Equation:
10x + 1.9x = 3570
11.9x = 3570
x = 300
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# of DV sold = 10x = 3000
# of MM sold = 1.9x = 1.9*300 = 570
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Cheers,
Stan H.
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