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March 28, 2017

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Mr. Smith has 17 18-cent notebooks and 7-cent pencils. The notebooks and pencils are worth $1.85. How many notebooks and how many pencils does Mr. Smith have?

I would like to see how this is solved, not just the answer, that way I can learn how to do it.

  • Math - ,

    17=N+P
    .18N+.07P=1.85

    in the first equation solve for N
    N=17-P
    Put that into the second equation.
    .18(17-P)+.07P=1.85
    then solve for P. Once you have that,
    N=17-P

  • Math - ,

    Thank you so much for explaining.

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