To find out how many pints of white paint Michael used, we first need to determine the total amount of paint he used, and then subtract the amount of blue paint to find the amount of white paint.
If 4/5 of the total amount is blue paint, then 1/5 of the total amount is white paint.
Let's represent the total amount of paint Michael used as x pints. We know that:
- 4/5 of x = 6.4 pints (amount of blue paint)
- 1/5 of x = amount of white paint
First, we can find the total amount of paint, x, by multiplying 6.4 by 5/4 (to account for the 4/5 ratio of blue paint):
x = 6.4 pints × (5/4) = 8 pints
Now that we know the total amount of paint used (8 pints), we can find the amount of white paint used, which is 1/5 of the total:
1/5 of 8 pints = 8 pints × (1/5) = 1.6 pints
Therefore, Michael used 1.6 pints of white paint to paint his bedroom walls.