170/200 = 85%
The fraction 170/200 represents 85%, a value you might see on a test score, survey result, or battery charge. For example, if 170 out of 200 people approve of a new school rule, the approval rate is 85%.
You can picture 85% as most of a whole, with only a small part left over. A quick estimate is that it is a little more than four-fifths, since four-fifths is 80%.
One common mistake is thinking 85% means 85 out of 100 items were used in every situation. It really means 85 parts out of every 100 equivalent parts, so the total could be 200, 1,000, or another amount.
