SOLUTION: A trader bought a watch and sold it at 30% more than its original cost. How much did the trader earn if the original cost of the watch was P? What should be the equation for this

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: A trader bought a watch and sold it at 30% more than its original cost. How much did the trader earn if the original cost of the watch was P? What should be the equation for this       Log On


   

Question 848329: A trader bought a watch and sold it at 30% more than its original cost. How much did the
trader earn if the original cost of the watch was P? What should be the equation for this question?
Answer by swincher4391(1107) About Me  (Show Source):
You can put this solution on YOUR website!
Let the original cost of the watch be P.
Then what he sold the watch at is 1.3P
Then he earned 1.3P - P = highlight%28.3P%29