To solve the question of what number 10% equals one fourth of 120, follow these steps:
1. Calculate one fourth of 120.
[tex]\[
\text{One fourth of 120} = \frac{120}{4} = 30
\][/tex]
2. Set up the equation where one fourth of 120 is equal to 10% of some number [tex]\( x \)[/tex].
[tex]\[
30 = 0.1 \times x
\][/tex]
3. Solve for [tex]\( x \)[/tex].
[tex]\[
x = \frac{30}{0.1}
\][/tex]
4. Perform the division.
[tex]\[
x = 300
\][/tex]
Therefore, 10% of the number 300 is equal to one fourth of 120.
The correct answer is:
(D) 300