Properties of Real Numbers · Exercise 96

Cooking time Helen bought a 24-pound turkey for her family’s Thanksgiving dinner and wants to know what time to put the turkey in to the oven. She wants to allow 20 minutes per pound cooking time. Calculate the length of time needed to roast the turkey:

ⓐ First, by multiplying $24\cdot 20$ to find the total number of minutes and then multiplying the answer by $\frac{1}{60}$ to convert minutes into hours.
ⓑ Next, by multiplying $24\left(20\cdot \frac{1}{60}\right).$
ⓒ Which of the properties of real numbers says that your answers to parts (a), where you multiplied $\left(24\cdot 20\right)\frac{1}{60},$ and (b), where you multiplied $24\left(20\cdot \frac{1}{60}\right),$ should be equal?

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Elementary Algebra 2e · §1.9 Properties of Real Numbers · Exercise 96