Could someone please answer this before the end of the day? I'll give brainliest but explain your answer, or I won't give you the brainliest. Thanks!

Answer: Answer is C.
Step-by-step explanation:
Let 65% of 90 be x
65% of 90 =x
65% of 90=x
65/100 x 90 =x
65/100 = x/90
so, 65/100 = x/90