Lydia uses 8.9 pints of blue paint and white paint to paint her bedroom walls. 4 5 of this amount is blue paint, and the rest is white paint. How many pints of white paint did she use to paint her bedroom walls?

1.78 pints

Step-by-step explanation:

We need to find 4/5 of the total pints of paint she used, so we know how much blue paint she used. Then, we subtract that from the total pints of paint that she used.

She used 8.9 pints of both blue and white paint.

Therefore, the amount of blue paint she used is:

4 / 5 * 8.9 = 7.12 pints

The amount of white paint she used is therefore:

8.9 - 7.12 = 1.78 pints

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