13. On a 26 question test, 5 points were deducted for each wrong answer and 8 points were added for right answers. If all the questions were answered how many were correct if the score was zero.
a) 10
b) 11
c) 13
d) 12

• ans:10
  let x ques were correct therefore (26-x) were wrong
  8x-5(26-x)=0
  8x+5x=130
  x=10
• 11 years agoHelpfull: Yes(34) No(0)
• answer is 10.
  if 10 were correct , therefore 16 would be wrong,
  therefore 10*8 = 80 ,and 16*(-5)=80 so 80-80= 0
• 11 years agoHelpfull: Yes(6) No(2)
• answer is 10
• 11 years agoHelpfull: Yes(2) No(0)
• Ans is a) 10
  as 10 right answer gives you, 80 marks and now the remaining questions are 16, which are wrong, so 1685 = 80 marks, so 80-80 = 0 marks, !
• 11 years agoHelpfull: Yes(1) No(0)
• answre is 10
  ->10*8=80 (right answers)
  remaining 16 wrong answers
  ->16*5=80
  ->80-80=0
• 11 years agoHelpfull: Yes(1) No(0)
• if all qsn are correct then=26*8=208
  if one qsn is wrong then marks=8+5=13
  so if 16 qsn is wrong then=16*8=208
  so no of right qsn=26-16=10.
• 11 years agoHelpfull: Yes(1) No(0)
• let correct answers=x
  wrong=y
  8(x)-5(y)=0
  x+y=26
  on solving above x=correct answers=10
• 11 years agoHelpfull: Yes(1) No(0)
• 10 ans.
  8x-5*(26-x)=0
• 11 years agoHelpfull: Yes(1) No(0)
• for each correct answer 8 mark
  wrong answer 5 mark reduce
  10*8=80 if 10 question is right mark is remaining 16 questions
  16*5=80
  80-80=0 so answer is 10
• 11 years agoHelpfull: Yes(1) No(0)
• go through the option it will be much fast. and the ans is 10.
• 11 years agoHelpfull: Yes(1) No(1)
• 16 questions were wrong and 10 questions were right
  10*(+8)+16*(-5)=0
• 11 years agoHelpfull: Yes(0) No(1)
• 10
  10*8-16*5=0
• 11 years agoHelpfull: Yes(0) No(0)
• Its answer is 10
• 9 years agoHelpfull: Yes(0) No(0)