Machine A produces bolts at a uniform rate of 120 every 40 second, and Machine B produces bolts at a uniform rate of 100 every 20 seconds. If the two machines run simultaneously, how many seconds will it take for them to produce a total of 200 bolts?

• Ans=25 Seconds
  For Machine A bolts/second=120/40=3
  For Machine B bolts/second=100/20=5
  Therefore for every 1 second it will produce=3+5=8 bolts
  For production of 200 bolts=200/8= 25 Seconds
• 12 years agoHelpfull: Yes(19) No(0)
• 25seconds
  A produce 3 bolts in 1 minute
  B produce 5 bolts in 1 minute
  together produce 8 bolts in 1 minute
  for 200 bolts = 200/8=25
  therefore answer is 25
• 12 years agoHelpfull: Yes(1) No(0)
• Answer 25 seconds
  
  machine A produces 3 bolts and machine B produces 5 bolts in one second .therefore no.of bolts produced in one second =8
  
  time taken to produce 200 bolts =25
• 12 years agoHelpfull: Yes(0) No(0)