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In 20 minutes, I ate 13 sub sandwiches. What is my rate in sandwiches per hour?

Answer 1

Jeremiah Andrews

#39#

#"note that "20" minutes "=20/60=1/3" hour"#

#"and 1 hour "=3/3#

#rArr1/3+1/3+1/3=3/3#

#rArr3xx13=39" sandwhiches per hour"#

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Answer 2

Autumn Arnold

To find the rate of sandwiches eaten per hour, we first need to convert the time to hours. Since there are 60 minutes in an hour, we divide 20 minutes by 60 to find the equivalent time in hours.

[ \frac{20}{60} = \frac{1}{3} \text{ hours} ]

Next, we calculate the rate of sandwiches eaten per hour by dividing the number of sandwiches eaten (13) by the time in hours.

[ \text{Rate} = \frac{13 \text{ sandwiches}}{\frac{1}{3} \text{ hours}} ]

[ \text{Rate} = 13 \times 3 = 39 \text{ sandwiches per hour} ]

So, your rate of eating sandwiches per hour is 39 sandwiches.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.