Anna painted 1/6 of a wall, Eric painted 1/5 of the wall, and Meadow painted 1/4 of the wall. There

Anna painted 1/6 of a wall, Eric painted 1/5 of the wall, and Meadow painted 1/4 of the wall. There are now 3910 square feet left to paint. How many square feet did Anna paint?

Using 60 as a common denominator through least common multiple, we get:
1/6 = 10/60
1/5 = 12/60
1/4 = 15/60

10/60 + 12/60 + 15/60 = 37/60

Remaining part of the wall is 60/60 - 37/60 = 23/60

3910/23 = 170 for each 1/60 of a wall

Anna painted 1/6 or 10/60 of the wall. So we multiply 170 * 10 = 1,700 square feet