Brock is painting two walls that are the same size. he already has painted $1/4$ of one wall and $4/12$ of the other wall. How much area does Brock still need to paint?

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Answer 1 · 2018-08-13T20:55:52

$1 5/12$ walls are left to paint.

If $1/4$ has been painted, then there is $3/4$ of the first wall left.

$4/12 = 1/3$

If $1/3$ of the second wall is painted, then $2/3$ is left.

Each wall can be regarded as $1$ full wall. In total there are $2$ full walls to paint.

$3/4+2/3$ are left of the two walls

$(9+8)/12 = 17/12$

$17/12 = 1 5/12$ walls are left to paint.

Brock is painting two walls that are the same size. he already has painted 1/41/4 of one wall and 4/124/12 of the other wall. How much area does Brock still need to paint?