question: It takes Carmen 10 minutes to finish a crossword puzzle and 5 minutes to finish a sudoku puzzle.  Over the weekend she solved 3 crossword puzzles and 8 sudoku puzzles.  How much time did she spend playing these games?
answer: It takes 10 minutes to complete a crossword puzzle and she completed 3 for a total of 10*3 = <<10*3=30>>30 minutes
  It takes 5 minutes to complete a sudoku puzzle and she completed 8 for a total of 5*8 = <<5*8=40>>40 minutes
  She spent 30 minutes on crosswords and 40 minutes on sudoku for a total of 30+40 = <<30+40=70>>70 minutes
  #### 70