Conversion from gallons to quarts
1 gallon = 4 quarts
Now,
Angela has
gallons = 
= 10 quarts of blue paint
Ryou has 1/2 of what Angela has = 1/2*10 = 5 quarts of white paint.
Each wall requires
of paint.
After coloring;
Blue colored walls = (10)/() = 3 walls with 7/11 quarts of paint remaining.
White colored walls = (5)/() = 1 wall with 9/11 quarts of paint remaining
1 gallon = 4 quarts
Now,
Angela has
Ryou has 1/2 of what Angela has = 1/2*10 = 5 quarts of white paint.
Each wall requires
After coloring;
Blue colored walls = (10)/(
White colored walls = (5)/(