Jung Kook stayed at McDonald's and ordered a cup of hot coffee. When the coffee was served at around 7:00 am, its temperature is 75 degree Celsius. The temperature inside is maintained at 18 degree Celsius. At around 7:15 am, the temperature of the coffee dropped by 15 degrees. What is the temperature of the coffee at exactly 7:25AM? If Jung Kook wants to drink the coffee when its temperature is 45 deg celcius, at what time will this happen?

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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"Jung Kook PROBLEM SOLVING
Jung Kook stayed at McDonald's and ordered a cup of hot coffee. When the coffee was served at around
7:00 am, its temperature is 75 degree Celsius. The temperature inside is maintained at 18 degree
Celsius. At around 7:15 am, the temperature of the coffee dropped by 15 degrees. What is the
temperature of the coffee at exactly 7:25AM? If Jung Kook wants to drink the coffee when its
temperature is 45 deg celcius, at what time will this happen?
Transcribed Image Text:"Jung Kook PROBLEM SOLVING Jung Kook stayed at McDonald's and ordered a cup of hot coffee. When the coffee was served at around 7:00 am, its temperature is 75 degree Celsius. The temperature inside is maintained at 18 degree Celsius. At around 7:15 am, the temperature of the coffee dropped by 15 degrees. What is the temperature of the coffee at exactly 7:25AM? If Jung Kook wants to drink the coffee when its temperature is 45 deg celcius, at what time will this happen?
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