Given that Marisa painted 1/2 of her bedroom in 3/4 of an hour.
we know that there are 2 halfs in a bedroom.
Each half will take 3/4 hours
so total time to paint entire bedroom
[tex] =\frac{3}{4}+\frac{3}{4} [/tex]
[tex] =\frac{3+3}{4} [/tex]
[tex] =\frac{6}{4} [/tex]
[tex] =\frac{3}{2} [/tex]
Hence final answer is 3/2 hours or you can say 1.5 hours.