Question

If he paints 1/2 of the wall blue, how many feet will be blue?

Answer 1

Find the area of the wall:

`A=8(2)/(5)ft*18(1)/(3)ft`

To multiply mixed numbers first turn it into improper fractions:

`\begin{gathered} 8(2)/(5)=8+(2)/(5)=(40)/(5)+(2)/(5)=(42)/(5) \\ \\ 18(1)/(3)=18+(1)/(3)=(54)/(3)+(1)/(3)=(55)/(3) \end{gathered}`
`\begin{gathered} A=(42)/(5)ft*(55)/(3)ft \\ \\ A=(2310)/(15)ft^2 \\ \\ A=154ft^2 \end{gathered}`

As just the half (1/2) of the wall will be paint in blue divide the area of the wall into 2:

`(154ft^2)/(2)=77ft^2`

Then, 77 square feet will be blue.

Answer: 77