In July, the average temperature in one US city was $29 ° C$ . By December, the average temperature had fallen by $29 ° C$ . Explain why the average temperature in December was $0 ° C$ .

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Solution

Finding average temperature in December:
Average temperature in July $= 29 ° C$
Average temperature fallen by December $= 29 ° C$
It means temperature of July fall by $= - 29 ° C$
So, December temperature $= J u l y t e m p e r a t u r e - 29 ° C$
$= 29 ° C - 29 ° C = 0 ° C$
Hence, the average temperature in December is $0 ° C$ .

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In July, the average temperature in one US city was 29°C. By December, the average temperature had fallen by 29°C. Explain why the average temperature in December was 0°C.

Finding average temperature in December:Average temperature in July =29°CAverage temperature fallen by December =29°CIt means temperature of July fall by =-29°CSo, December temperature =Julytemperature-29°C =29°C-29°C=0°CHence, the average temperature in December is 0°C.

In July, the average temperature in one US city was $29 ° C$ . By December, the average temperature had fallen by $29 ° C$ . Explain why the average temperature in December was $0 ° C$ .