Question

The temperature at noon was− 3 ∘C. By 10 pm on the same day the temperature decreased by 5.4∘. What was the temperature at 10 pm?

Answer 1

Answer:

if temperature decreases it means that the temperature falls toward negative.that is why we will substract the given temperature from -3°C

so at 10 pm temperature was -3-5.4 =-7.4°C

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