Given:
Sample proportion = 85% = 0.85.
Confidence level (CL) = 90%.
Confidence interval (CI)

We want the confidence interval to be 5% or 0.05. Therefore

Because this number is less than 1, a default sample size of 30 (for the normal distribution) is recommended.
Answer: 30
Let the number be x.
7x-x=42
6x=42
x=7
the number is 7
4 over 3.2 = 6 over 4.8
I hope this helps!!
Hm..I'm pretty sure the answer is 34
Cups, pints, quarts, gallons. Hope this helps :)