Question

The temperature at 12 noon was 15⁰°C abone zero. If it decreases at the rate of 3°C per hour until midnight, at what time would the temperature be -3°C. What neould the temperature be at midnight​

Answer 1

Answer:

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Step-by-step explanation:

1 hour = - 3°C

12 noon until 12 midnight = 12 hours

12 hours = 3°C × 12 = -36°C

15 °C - 36° C = -21 °C

temperature at midnight = -21 ° C

15°C - 18 °C = - 3° C

18°C ÷ 3°C = 6 hours

12 noon + 6 hours = 6 evening

temperature at - 3°C = 6 pm / 6 evening