You get 1 & -0.25 for each right n wrong ans. Answring 72 ques u get 47. How many ans were wrong? Explain pls

• let x be cort,thn 72-x are wrong.
  x(1)+(72-x)(-1/4)=47
  x=52,72-52=20.
  so,20 are wrong.
• 11 years agoHelpfull: Yes(5) No(0)
• x + y = 72
  x - 0.25 y = 47
  
  so 5x = 260 .. x = 52 and y = 20 ..so wrong ans are 20
• 11 years agoHelpfull: Yes(2) No(0)
• from verification 52 right, 20 were wrong
• 11 years agoHelpfull: Yes(0) No(0)