PROBLEM: 1. PATIENT HAS A TIDAL VOLUME OF 800 ML. AND IS BREATHING AT 20 TIMES PER MINUTE. HER INSPIRATORY TIME IS 1.5 SECONDS AND THE EXPIRATIORY TIME IS 1.0 SECONDS. THERE IS A .5 SECOND PAUSE...

Please give me only correct answer with explanation.

I asked this question already but someone give me incorrect answer.

Extracted text: PROBLEM: 1. PATIENT HAS A TIDAL VOLUME OF 800 ML. AND IS BREATHING AT 20 TIMES PER MINUTE. HER INSPIRATORY TIME IS 1.5 SECONDS AND THE EXPIRATIORY TIME IS 1.0 SECONDS. THERE IS A .5 SECOND PAUSE BETWEEN THE END OF EXPIRATION AND THE BEGINNING OF INSPIRATION. IF SHE IS ON A NASAL CANNULA AT 4 LPM, WHAT IS HIS APPROXIMATE FIO2? ANS 33.25% or 33%