Question

food safety guidelines recommend that a beef rib roast (bone - in) should cook for 23.0 minutes per pound based on a 325 °f oven setting. how many hours should it take to cook a 8.21 pound roast?

Explanation:

Step1: Calculate total minutes

Multiply minutes per pound by pounds. So, $23.0\times8.21 = 188.83$ minutes.

Step2: Convert minutes to hours

Since 1 hour = 60 minutes, divide total minutes by 60. So, $\frac{188.83}{60}\approx3.15$ hours.

Answer:

$3.15$