24 hours are ------ 1 day
1 hour is -------- x day
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thus x day is [tex] \frac{1hour \cdot 1day}{24hours}= \frac{1}{24} day [/tex]
so
1 hour is 1/24 day
thus 2.5 hours are [tex]2.5 \cdot \frac{1}{24}days= \frac{2.5}{24}days= \frac{25}{240}days[/tex]
Answer: [tex]\frac{25}{240}[/tex] days, which is approximately 0.1 days