## 2. In a cold storage chamber, the temperature drops 5.2C every 10 minutes. If the temperature is initially 19C, what is the temperature in the chamber after 1½ hours?

### Important things we know :

5.2°C down every 10 minutes.*(x9 = 90 minutes)*

*(*

*90*÷

*10 = 9)*

Temperature is 19°C

19°C - (5.2°C x 9) = 19°C - 46.8°C

= -27.8°C

Therefore, the temperature in the cold storage chamber after 1½ hours is, -27.8°C

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