Answer: Option B
Explanation:
16/f = 12/9
Multiply f on both sides
(16/f) × f = (12/9) × f
16 = (12/9) × f
Now, multiply 9 on both sides
16 × 9 = (12/9) × 9 × f
144 = 12 × f
Now, divide both sides by 12
144/12 = (12/12) × f
12 = f
f = 12
Answer:
B)12
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