ten over twenty-five equals r over twenty
A. 4
B. 5
C. 8
D. 200
To solve this question, we can use cross-multiplication.
Ten over twenty-five can be written as 10/25.
10/25 = r/20
To cross-multiply, we multiply the numerator of the first fraction with the denominator of the second fraction, and vice versa:
10 x 20 = 25r
200 = 25r
To solve for r, we divide both sides by 25:
r = 8
Therefore, the answer is C. 8.