3 years ago

If you woke up at 11:15 am and went to sleep at 1:55 am. How many hours where you awake?

Mathematics

2 answers:

dybincka [34]3 years ago

7 0

Answer: 15 hours and 10 minutes

Hope this helps!

shutvik [7]3 years ago

3 0

From 11:15 am to 11:15 pm, it is 12 hours.

From 11:15 pm to 1:15 am it is 2 hours

From 1:15 am to 1:55 am it is 40 minutes.

12 hours + 2 hours + 40 minutes = 14 hours and 40 minutes =

= 14 hours and 40/60 hours = 14 2/3 hours

Answer: 14 2/3 hours

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Dennis can walk 2.833 miles each hour . About how far can he walk in 3 hours and 15 minutes

Bezzdna [24]

well, let's split the hours in minutes, so since 1 hr is 60 minutes, so he can walk 2.833 miles in 60 minutes, well, 3 hrs is 3*60 = 180 minutes, then we add 15 minutes, that's 195 minutes.

if he can walk 2.833 miles in 60 minutes, how long will it be for 195 minutes?

$\bf \begin{array}{ccll} miles&minutes\\ \cline{1-2} 2.833&60\\ x&195 \end{array}\implies \cfrac{2.833}{x}=\cfrac{60}{195}\implies \cfrac{2.833}{x}=\cfrac{4}{13} \\\\\\ 36.829=4x\implies \cfrac{36.829}{4}=x\implies 9.20725 = x$