A and B came back home after their exam and their father asked them about the test.
A replied-- 1/3rd of my answers were wrong
B replied-- 5 of my answers were wrong but together we got 3/4 of answers right.
How many questions were there for the exam?

• ans is 30...
  correct ans by A is---(2/3)*X
  correct ans by B is---(X-5)
  total question is 2*X
  so ...(3/4)*2X=2X/3+X-5
  final ans is 30
• 7 years agoHelpfull: Yes(33) No(5)
• 5 was the 1/3rd answer so 3/4 the will be 15 total questions are 20
• 7 years agoHelpfull: Yes(4) No(12)
• (((2/3)*x)+(x-5))/2 = (3/4)*x
  x=30.
• 7 years agoHelpfull: Yes(4) No(0)
• x-5=(3/4)x
  x=20
• 7 years agoHelpfull: Yes(2) No(10)
• HI anil,how u took 3/4(2x)
• 7 years agoHelpfull: Yes(1) No(0)
• @tapan no of questions in each paper is x .so total no of questions is 2x..they got 3/4 right answer from total 2x questions
• 7 years agoHelpfull: Yes(1) No(0)
• ans is 30...
  A is---(2/3)*X
  B is---(X-5)
  total is 2*X
  hence (3/4)*2X=2X/3+X-5
  final soln is 30
• 6 years agoHelpfull: Yes(1) No(0)
• Hi anil,we have infosys drive on 12th,can you give some rcent questions?
• 7 years agoHelpfull: Yes(0) No(0)
• tej ho yr
• 7 years agoHelpfull: Yes(0) No(4)
• no of questions totally(2 ques paper)=2x
  correct ques answered by A=2/3*x
  correct ques answered by B=x-5
  given data 3/4 0f answers were right means 3/4*2x
  3/4*2x=2/3*x+(x-5)
  x=10
  2x=20
• 7 years agoHelpfull: Yes(0) No(1)
• 150
  100*85 + 55*x = 75(100+x)
• 7 years agoHelpfull: Yes(0) No(0)
• Don't get it.
• 6 years agoHelpfull: Yes(0) No(0)
• in the exam asked the questions are 20
• 6 years agoHelpfull: Yes(0) No(1)