Answer:
Step-by-step explanation:
remaining wall=x-(x/6+ x/5+x/4)
(L.C.M. of 6,5,4=60)
[tex]=x-\frac{(10+12+15)x}{60} \\=\frac{60x-37x}{60}=\frac{23x}{60} \\Now ~\frac{23x}{60}=3910\\x=3910*\frac{60}{23} =170*60=10200\\they painted=10,200-3910=6290~sq~ft[/tex]
Anna~painted=10200*\frac{1}{6}=1700~sq~ft.
