Question 1169967
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 Peanut butter bars cost $1.50 and crispy bars cost $1.25. All together you made $147.25 by selling 102 candy bars.
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p, how many peanut butter bars sold
Q, total number of candy bars sold
Q-p, how many crispy bars sold
R, the sales revenue for all the Q bars sold
L, price for crispy bars
H, price for peanut butter bars


{{{highlight_green(Hp+L(Q-p)=R)}}}

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{{{Hp+LQ-Lp=R}}}
{{{(H-L)p=R-LQ}}}

{{{highlight(p=(R-LQ)/(H-L))}}}------quantity of the peanut bars sold


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H=1.5 dollars per bar
L-1.25 dollars per bar
Q=102 candy bars
R=147.25 dollars


Substitute those into the formula for p.