Answer: It is 7
Step-by-step explanation:
The most accurate way would be the fourth answer, because to estimate 66% of 47 you need to round both as closely as possible. 66% rounds closest to 2/3, and 47 is closest to 48
The answer to your question is 30%
5(i + 2) = 8(i -1)
5i + 10 = 8i -8
-3i + 10 = -8
-3i = -18
i = 6
So 10 questions is 100% you missed 30% of the questions so you would do 100%-30% which is 70%
