You burn 35 calories every 3 minutes running on a treadmill. You want to run for at least 15 minutes, but no more than 30 minutes. What are the possible numbers of calories that you will burn?

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Answer:

The possible numbers of calories that we will burn are 175 and 350 calories, respectively.

Step-by-step explanation:

From statement we know that 35 calories are burnt every 3 minutes while running on a treadmill. The total amount of calories burnt ([tex]C[/tex]) as a function of time is:

[tex]C = c\cdot \Delta t[/tex]

Where:

[tex]c[/tex] - Calories burn rate, measured in calories per minute.

[tex]\Delta t[/tex] - Time, measured in minutes.

Now, we get the calories burn rate as follows:

[tex]c = \frac{35\,cal}{3\,min}[/tex]

[tex]c\approx 11.667\,\frac{cal}{min}[/tex]

And minimum and maximum amounts of calories are:

Minimum amount ([tex]t = 15\,min[/tex])

[tex]C = \left(11.667\,\frac{cal}{min} \right)\cdot (15\,min)[/tex]

[tex]C = 175.005\,cal[/tex]

Maximum amount ([tex]t = 30\,min[/tex])

[tex]C = \left(11.667\,\frac{cal}{min} \right)\cdot (30\,min)[/tex]

[tex]C = 350.010\,cal[/tex]

The possible numbers of calories that we will burn are 175 and 350 calories, respectively.

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