Official Solution: Bunuel
If participants read the words without auditory accompaniment at their respective ordinary reading speeds for elementary English text, then the average speed at which the participants of this study ordinarily read elementary English text with words of the same average length as those in this study is closest to
This problem asks us to read the study participants’ average reading time
without sound accompaniment from the bar graph, and then to convert that figure into words per minute.
The two average times per word without audio accompaniment in the bar graph—the heights of the two bars in the rightmost pair—are roughly 0.14 and 0.15 second, respectively, so readers take an overall average of about 0.145 second to read each word. That’s 0.145 second per 1 word, or 1 word per 0.145 second.
Convert to words per minute with standard unit conversion methods:
\(\left(\frac{1 \ word}{0.145 \ sec}\right)\left(\frac{60 \ sec}{1 \ min}\right)=\frac{60}{0.145}\approx 414\)
words per minute, so the answer is closest to
(D) 400 words per minute.
Correct answer: If participants read the words without auditory accompaniment at their respective ordinary reading speeds for elementary English text, then the average speed at which the participants of this study ordinarily read elementary English text with words of the same average length as those in this study is closest to
"400 words per minute."