An N2 indication of what percent corresponds with an actual N2 value of 102.5% to 103.49%?

An N2 indication of what percent corresponds with an actual N2 value of 102.5% to 103.49%?

• A. 103%
• B. 108%
• C. 102.5%
• D. 103.01%

Answer: (A)

The key idea is how the reading is rounded to a whole percent. If the actual N2 value is 102.5% up to 103.49%, rounding to the nearest whole percent makes it 103% in all cases. Specifically, 102.5% rounds up to 103%, and anything up to 103.49% still rounds to 103%. So the indicated N2 would be 103%. The other options fall outside that rounding result: 108% is far outside the range, 102.5% would only occur if the value were at the lower end, and 103.01% would still be shown as 103% on a typical whole-percent display.

The key idea is how the reading is rounded to a whole percent. If the actual N2 value is 102.5% up to 103.49%, rounding to the nearest whole percent makes it 103% in all cases. Specifically, 102.5% rounds up to 103%, and anything up to 103.49% still rounds to 103%. So the indicated N2 would be 103%. The other options fall outside that rounding result: 108% is far outside the range, 102.5% would only occur if the value were at the lower end, and 103.01% would still be shown as 103% on a typical whole-percent display.