Question

Tyler used 1 1/4 gallons of paint to paint 5/7 of a fence. how many gallons will it take to paint the whole fence ?

Answer 1

1.75 gallons

Explanation:

we see that `1 1/4` gallons will do `5/7` of the job so obviously more paint is needed. `1 1/4` of what is equal to `5/7`?

convert to decimal for ease

`1.25/x = 5/7`

cross multiply to eliminate the denominators

`7(1.25) = 5x`

`5x = 8.75`

`x = 1.75` (or `1 3/4`)