An exam consists of 200 questions to be solved in 3 hours, out of which 50 are maths questions. It is suggested that twice as much time be spent on each math question as for each other question. How many minutes should be spent on maths problems?

• x=time for each math problem
  y= time for every other problem
  50x+150y=180 minutes
  x=2y because spent twic as much time on the math problems as the other
  
  50(2y)+150y=180
  100y+150y=180
  250y=180
  y= 180/250=18/25 of a minute per problem on the other questions
  
  x=2(18/25)
  x=36/25 minutes
• 13 years agoHelpfull: Yes(48) No(10)
• let the total time taken to solve 1 question of maths=2x mins
  other question=x mins
  50*2x+150*x=180mins
  therefore total time spent on maths question=72mins(solve the equation)
• 12 years agoHelpfull: Yes(37) No(11)
• The equation is
  50*2x+150*x=180mins
  by solving we get x=72min.
• 12 years agoHelpfull: Yes(12) No(13)