question: James buys a ring for his bride-to-be.  The diamond cost $600 and the gold cost $300.  He pays a 30% premium for it to be made.  How much did he pay?
answer: The material cost 600+300=$<<600+300=900>>900
  The premium came out to 900*.3=$<<900*.3=270>>270
  So the total cost was 900+270=$<<900+270=1170>>1170
  #### 1170