Ram gets 148 marks for 20 questions. +10 for correct. -3 for wrong. How many correct answers?

• 10x-3(20-x)=148
  =>x=16. (Ans)
• 11 years agoHelpfull: Yes(36) No(2)
• 10X-3Y=148---->total marks is 148
  X+Y=20----->no of ques is 20
  on solving y=4 x=16
  => No. of correct ans is 16
• 11 years agoHelpfull: Yes(9) No(0)
• if correct answers=x
  total marks=20*10=200
  he get 148
  so,marks lost (200-148)=52
  now,(20-x)*10+(20-x)*3=52
  so,x=16 (ans)
• 11 years agoHelpfull: Yes(7) No(0)
• 16*10-4*3=148
  so, 16 correct answers
  
• 11 years agoHelpfull: Yes(4) No(0)
• 16*10=160
  4*3=12
  160-12=148
  
• 11 years agoHelpfull: Yes(0) No(0)
• 16 were correct .w=right answers x be wrong answers so for total to get 148 marks 10w-3x=148 there are 20 questions so 16*10-4*3 gives 148 so 16 is correct.
• 11 years agoHelpfull: Yes(0) No(0)
• Let number of correct answers = x
  Total Marks given for correct answers = 10 * x
  Number of incorrect answers = 20-x
  Total Marks given for incorrect answers = 3 * (20-x)
  Then,
  Marks for Correct - Marks for Incorrect = Marks obtained
  That is,
  10x - 3(20-x) = 148
  On solving,
  x = 16
  
  Therefore, Number of correct answers = 16
  
• 10 years agoHelpfull: Yes(0) No(0)
• let x is no of correct answers.
  x*10+(20-x)-3 =148
  x=16
  
• 10 years agoHelpfull: Yes(0) No(0)