Now is

Now is 5°C morning. What will the temperature be if
i. It rises by 12°C
ii. It falls by 15°C

Correct answer:

t₁ =  17 °C
t₂ =  -10 °C

Step-by-step explanation:

$$\begin{gathered} t_0=5\text{ °C } \\ {t}_1=t_0+12=5+12=17\text{°C} \end{gathered}$$

$t_2=t_0-15=5-15=-10\text{°C}$

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