Question 1190847
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P and Q are the original prices before the 40% and 50% discount respectively.


If you save 40%, then you pay the remaining 60%
0.60P = price after discount
0.60P = 18
P = 18/0.60
P = 30


If you save 50%, then you pay the remaining 50%
0.50Q = 18
Q = 18/0.50
Q = 36


The difference between the original prices is Q-P = 36-30 = <font color=red>6 dollars</font>
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