Question

Shelby bought a 2-ounce tube of blue paint. She used 2/3 ounce to paint the water, 3/5 ounce to paint the sky, and some to paint a flag. After that, she has 2/15 ounce left. How much paint did Shelby use to paint her flag?

Answer 1

The amount of ounce used for paint is
`(9)/(15) ounce`

Explanation:

used amount for water is
`(2)/(3)` ounce.

used amount for sky is
`(3)/(5)` ounce.

thus, the total amount used is
`(2)/(3)` +
`(3)/(5)`

=
`(19)/(15)`

Thus the total unused amount is 2 -
`(19)/(15)` =
`(11)/(15)` .

But the remaining amount is
`(2)/(15)`.

Thus used amount for flag is
`(11)/(15)` -
`(2)/(15)`

=
`(9)/(15)`