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Math Help - introduction to functions word problem

  1. #1
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    introduction to functions word problem

    How would i set up a function for this word problem from functions section??
    Credit Card Fees A certain credit card company gets 4% of each charge, and the retailer recieves the rest. At the end of a billing period the retailer recieves a statement showing only the retailers portion of each transaction. Express the original amount charged C as a function of the retailer's portion r.

    any help looking at this word problem would be appreciated.
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  2. #2
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    Quote Originally Posted by tekkie2008a View Post
    How would i set up a function for this word problem from functions section??
    Credit Card Fees A certain credit card company gets 4% of each charge, and the retailer recieves the rest. At the end of a billing period the retailer recieves a statement showing only the retailers portion of each transaction. Express the original amount charged C as a function of the retailer's portion r.

    any help looking at this word problem would be appreciated.
    The credit card company gets 4% of the charge, meaning the retailer gets 96%.
    At the end ... showing the 96% of each transaction.
    So 96 % of C = r

    0.96*C=r

    C:=r/0.96

    Does that make sense?
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