A. 20:3
B. 15:5
C. 12:4
D. 25:2
🧠 Explanation:
The ratio of 3.5 kg to 280 gm is 25:2. “Ratio” is a noun; “is” is a verb. Alternatives like “proportion” exist. Calculation requires converting 3.5 kg to grams (3500 g ÷ 280 g = 25:2). Understanding ratios is important in mathematics, engineering, and quantitative problem solving.
