OpenStax, Contemporary Mathematics §3.4 Rational Numbers · Example 31 · Algebra · Ratio, proportion & variation
Rational Numbers · Example 31
A study revealed that 70% of students suffer from sleep deprivation, defined to be sleeping less than 8 hours per night. If the survey had 400 participants, how many of those participants had less than 8 hours of sleep per night?
OpenStax, Contemporary Mathematics · §3.4 Rational Numbers · Example 31
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