Question

Brian used 4 3/10 gallons of red paint and 3 2/5 gallons of blue to paint 7 bookshelves. How many gallons og paint did he use for each bookshelf​

Answer 1

The quantity of paints did Brain uses to paint each bookshelves is 1.1 gallons .

Explanation:

Given as :

The quantity of red paint = 4
`(3)/(10)` =
`(43)/(10)` gallons

The quantity of blue paint = 3
`(2)/(5)` =
`(17)/(5)` gallons

So, The total quantity of paints = The quantity of red paint + The quantity of blue paint

or, The total quantity of paints =
`(43)/(10)` +
`(17)/(5)`

Or, The total quantity of paints =
`(43+34)/(10)`

Or, The total quantity of paints =
`(77)/(10)` = 7.7 gallons

Now, The total number of bookshelves to be paint = 7

And The total quantity of paints = 7.7 gallons

∵ To paint the 7 bookshelves , the quantity of paints = 7.7 gallons

∴ To paint the 1 bookshelves , the quantity of paints =
`(7.7)/(7)` gallons

I.e To paint the 7 bookshelves , the quantity of paints = 1.1 gallons

Hence The quantity of paints did Brain uses to paint each bookshelves is 1.1 gallons . Answer