Answer: B
Step-by-step explanation:
1. You multiply 4 to both sides, which makes it 1:3.2
2. Multiply 10 to both sides, which makes it 10:32
3. Divide by 2, and the answer is 5:16, which is B.
5 + 12 = 17 . Area is length x wide
Answer: 3.4
The total number of lessons to teach is 6*8.5 = 51 lessons.
15x = 51
X=3.4