Neco Model Questions Vol1 2020 Geography Question 10

The following are the average monthly temperatures (°C) and precipitation (mm) for a location:\n\n\begin{tabular}{c|cccccccccccc}\nMonth & Jan & Feb & Mar & Apr & May & Jun & Jul & Aug & Sep & Oct & Nov & Dec \\ \hline\nTemp (°C) & 28 & 30 & 32 & 34 & 35 & 33 & 31 & 30 & 29 & 28 & 27 & 26 \\ \nPrecip (mm) & 5 & 10 & 20 & 40 & 80 & 120 & 150 & 140 & 80 & 40 & 15 & 5 \\ \n\end{tabular}\n\n(a) Find the annual mean temperature.\n(b) Find the total annual precipitation.\n(c) Using the Köppen classification, identify the climate type (choose among Aw, Am, Af, Cw, etc.) given that a month is considered dry if its precipitation is less than \(100 - \frac{P_{annual}}{25}\) mm, and a tropical climate requires all monthly mean temperatures above 18°C. If the annual precipitation exceeds 2000 mm the climate is Af; otherwise, if a dry month exists it is Aw, else Am.