Question

The temperature at 5:00 am on July 2nd in white horse is -2 degree Celsius. Three hours later at 8:00 am,the rose to 12 degree Celsius. This temperature then doubles at 2:00pm. By 11:00 pm, the temperature dropped another degree Celsius. Determine the temperature at 11:00pm

Answer 1

$$\begin{gathered} \mathrm{Temperature}\mathrm{at}5:\hspace{0.17em}00\mathrm{a}.\mathrm{m}.=-2°\mathrm{C} \\ \mathrm{Temperature}\mathrm{at}8:\hspace{0.17em}00\mathrm{a}.\mathrm{m}.=-2°\mathrm{C}+12°\mathrm{C}=10°\mathrm{C} \\ \mathrm{Temperature}\mathrm{at}2:00\mathrm{p}.\mathrm{m}.=2\times 10°\mathrm{C}=20°\mathrm{C} \\ \mathrm{Temperature}\mathrm{at}11:00\mathrm{pm}=20°\mathrm{C}-1°\mathrm{C}=19°\mathrm{C} \end{gathered}$$