Answer:
1/3 a room
Step-by-step explanation:
we know that
A painter can paint 1/2 a room in 1 1/2 hours
so
using proportion
Find out how many of the same-sized rooms can he paint per hour
Remember that
[tex]1\frac{1}{2}=\frac{1*2+1}{2}=\frac{3}{2}[/tex]
Let
x -----> the number of the same-sized rooms
[tex]\frac{(1/2)}{(3/2)}\frac{room}{hours} =\frac{x}{1}\frac{room}{hour}\\\\x=\frac{1}{3}\ room[/tex]