for every correct answer 4 is awarded but for a wrong answer 2 is deducted. If there are a total of 150 questions and sukanya scores 480 how many answers of sukanya were correct?

• If x questions are correct, then
  4x-2(150-x) = 480
  6x= 780
  x=130
  
  so 130 questions are correct.
• 12 years agoHelpfull: Yes(24) No(0)
• ankush:: ans are 130 right and 20 are incorrect
  130*4+20*(-2)=480
• 12 years agoHelpfull: Yes(3) No(0)
• garima is correct as if all are correct it would be 150*4=600
  for 130 correct question she score 130*4=520
  but for rest 20 question she is wrong which is 20*2=40
  now her score after negative marking become 520-40 = 480
• 12 years agoHelpfull: Yes(2) No(0)
• @Ankush ans is 130 only bcoz 130-40(wrong answers)=480
• 12 years agoHelpfull: Yes(1) No(0)
• this que. is wrong..
  
• 12 years agoHelpfull: Yes(0) No(9)
• go throhgh option
  
• 12 years agoHelpfull: Yes(0) No(1)
• @Garima..how this is correct answer..
  130*4=520..but sukanya scores 480..how 130 is correct answers..
  please give me the reason..
• 12 years agoHelpfull: Yes(0) No(3)