Mike printed before the break 600 pamphlets per hour * 9 hours=<<600*9=5400>>5400 pamphlets
The working speed of Mike after the break was 600 pamphlets per hour / 3= <<600/3=200>>200 pamphlets per hour
Mike printed after the break 200 pamphlets per hour * 2 hours= <<200*2=400>>400 pamphlets
Leo worked third of the time that Mike worked before the break, so he worked 9 hours / 3 = <<9/3=3>>3 hours
Leo worked twice as fast as Mike before his break 600 pamphlets per hour * 2 = <<600*2=1200>>1200 pamphlets per hour
Leo printed 1200 pamphlets per hour * 3 hours = <<1200*3=3600>>3600 pamphlets
Combining the pamphlets of Leo and Mike 5400 + 400 + 3600 = <<5400+400+3600=9400>>9400 pamphlets
#### 9400