Question 725816
x/4+x/5=1/2
x=10/9=1.111 hours to fill the last half with out Moe
1/9*60=20/3=about 7 minutes 1 hour and 7 minutes without Moe

x/4+x/5-x/6=1/2
x=30/17=1.7647 hours about 1 hour 46 minutes with Moe