Carly bought a can of paint. She used ¼ to paint a rocking chair, ⅕ to paint a bookcase, and the rest to paint a dollhouse. When she was finished painting, she had 1/10 of the paint left. How much paint did Carly use for the dollhouse?

11/20

Step-by-step explanation:

Let's add up all the fractional parts that we know about. I turned them into decimals since I have memorized their decimal expansions, but you can add them as fractions if you want. 0.25+0.2+0.1=0.45, or 45/100, 9/20. This means she used 9/20 of the paint for other things, (let's just assume she used the last tenth to paint other things as well). That means the other 11/20 was used for the dollhouse.

4.5/10 or 9/20 of paint.

Step-by-step explanation:

1/4 is equivalent to 5/20.

1/5 is equivalent to 4/20.

1/10 is equivalent to 2/20.

So for Dollhouse 9/20 of paint was used.