Question

What fraction of the wall is coloured with neither red nor green?

• A. $\frac{25}{16}$
• B. $\frac{9}{25}$
• C. $\frac{16}{25}$
• D. $\frac{25}{9}$

Answer 1

The correct option is C $\frac{16}{25}$

$\text{Fraction}=\frac{\text{Part of the whole}}{\text{Total number of parts in the whole}}$

The wall has been divided into 25 equal parts as you can see above. Out of 25 parts, 4 parts are painted red and 5 parts are painted green.
Parts painted with neither red nor green = 25 - 4 - 5 = 16

The fraction of wall not colored with red or green is
$=\frac{16}{25}$