Answer :
100 = 30 + 10 + 10x
100 = 40 + 10x
-40 -40
60 = 10x
--- ----
10 10
6 = x
The equation is: 100 = 30 + 10 + 10x
The price of one cap is: $6
100 = 40 + 10x
-40 -40
60 = 10x
--- ----
10 10
6 = x
The equation is: 100 = 30 + 10 + 10x
The price of one cap is: $6