A particular Chemistry book costs $6 less than a particular Physics book. Two such Chemistry books
and three such Physics books cost a total of $123. Construct two simultaneous equations and solve
them using the substitution method. Show your working.

I just need help constructing the simultaneous equations. I should be fine with solving them, thank you :)

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  1. Just turn the words into math.

    A particular Chemistry book costs $6 less than a particular Physics book
    c = p-6

    Two Chemistry books and three Physics books cost $123
    2c+3p = 123

    now substitute and crank it out

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  2. Thank you :)

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