how do you solve this?

Question

A roast was cooked at 325 °F in the oven for 4 hours. The internal temperature rose from 32 °F to 145 °F. What was the average rise in temperature per hour?

Answer 1

"Per" means to divide. So you divide the change in temperature by the amount of time it took...

Change in temperature is 145 - 32 = 113°
So 113/4 = 28.25°/hour.

Answer 2

Since the starthing temperature was 32 and the final temperatuire was 145, the temperature increase by 113 degrees.
145-32=113.

Since the roast cooked for 4 hours the average rise in temperature per hour was 28.25 degrees.

That is 113 degrees/4 hours = 28.25 degrees per hours.

Answer 3

If a roast was cooked for 4 hours @325F it would be a cinder!
If the oven was preheated before the roast was put in to it then, there would be no increase in oven temperature.
If the question relates only to the rise in temperature of the roast then the average temp rise would be 145 - 32 / 4 = 28.25 p.h.

Answer 4

The significance of your answer is that there was no phase change in your temperature range for internal temperature.

In reality, your conductive temperature to raise internal temperature is limited to 212°F, until you drive all the moisture out of the meat, at which point it can begin to rise above 212°F.

This is how the roast gets nice and crusty brown on the outside, but stays moist on the inside.

Your question is actually a truck-load simpler than it could have been, given your data.

Answer 5

145-32=113
113/4 is about 28 F

Answer 6

ignore the cooking temp and look at only on what is asked...avg rise in temp per hour, which is a question of change in temp over time.
(145-32)/4=28.25 degrees/hour

Answer 7

145-32= 113
113/4 = 28.25 degrees per hour

Answer 8

This is a bit tricky......!!

325 divided by 4?? = 81.25
145-32=113 divided by 4 = 28.25??

sorry!

Answer 9

(145-32)/4

Answer 10

28.25 per hour

145-32=113

113/4=28.25