kbriaunna kbriaunna 25-08-2021 Mathematics contestada Can someone explain how this equation is solved? I have it already solved but I don't understand how the outcome is got but here is the problem. Selling price=(1+r)(original cost) 63=(1+r)(42) 1.5=1+r r=0.5 How did we go from that first part of the problem to the second; what was done exactly?
