Question

Noah has a mask collection of 40 masks. He keeps some in a display case and the rest on the wall. He keeps 15% of his masks in the display case. How many masks does he keep on his wall?

Answer 1

34

Explanation:

because yes.

Answer 2

1) convert percentage to decimal

`=15/100\\\\=0.15`

2) determine # of masks on the display case

`=40` ×
`0.15`

`=6`

3) subtract from total # of masks

`=40-6\\\\=34`

He keeps 34 masks on the wall.