14. Anuj gets 3 marks for each correctly done question but loses 2 marks for each wrongly done question. He attempts 30 questions and gets 40 marks. The number of correctly attempted questions is?

• 20
  
  Let the correctly attempted questions be x, then wrongly attempted questions=(30-x)
  Total marks = 3x - 2(30-x) = 30
  => 3x - 60 + 2x = 40
  => 5x = 100 or x=20
• 6 years agoHelpfull: Yes(0) No(0)