If X = "Price of Reuben" We know that 10(X) + 5(X+2) = 55
Therefore 10X + 5X +10 =55
Therefore 15X = 45
Therefore, the price of a Reuben is $3 because 45 / 15 =<<45/15=3>>3
The price of pastrami is $5 because 3 + 2 = <<5=5>>5
#### 5