watch ticks 90 times in 95 seconds. And another watch ticks 315 times in 323 secs. If they start together, how many times will they tick together in one and half hours?

• LCM of 95/90 and 323/315 = 323/9 secs
  
  They will tick together 90*60*9/323 times in 1.5 hrs
  
  so they will together 150 times in 1.5 hrs if starting tick is not considered.
• 12 years agoHelpfull: Yes(6) No(6)