Question

A rectangular section of a wall in a library is 90 in. long and 72 in. wide. A librarian is hanging photos on this section of the wall. Each photo needs a space of approximately 8 in. by 10 in.

Which estimate best approximates the number of photos that can be hung on the section of the wall?

A. 80
B. 160
C. 650
D. 810

Answer 1

I think its 80 sorry if Im wrong!!!! Please let me know if I was!!

Answer 2

A. 80

Explanation:

Length of rectangular section of a wall = 90 inches

Width of rectangular section of a wall = 72 inches

Area of rectangular section of a wall =
`Length * width`

=
`90 * 72`

=
`6480 inches^2`

Each photo needs a space of approximately 8 in. by 10 in.

So, area of each photo =
`Length * width`

=
`8 * 10`

=
`80 inches^2`

Now he number of photos that can be hung on the section of the wall:

`\frac{\text{Area of rectangular section of wall}}{\text{Area of each photo}}`

`(6480)/(80)`

`81`

So, 80 estimate best approximates the number of photos that can be hung on the section of the wall.