Neco 2020 Geography Question 31

A city's annual rainfall totals 1200 mm. The percentage contribution of each month to the annual rainfall is given: Jan 8 %, Feb 7 %, Mar 9 %, Apr 10 %, May 12 %, Jun 13 %, Jul 14 %, Aug 12 %, Sep 9 %, Oct 8 %, Nov 5 %, Dec 3 %. The average temperature for the months (in °C) are: Jan 28, Feb 29, Mar 30, Apr 31, May 32, Jun 33, Jul 34, Aug 33, Sep 32, Oct 31, Nov 30, Dec 29.\n\n(i) Calculate the rainfall (in mm) for each month.\n\n(ii) Determine the month in which the ratio \( \frac{\text{rainfall (mm)}}{\text{temperature (°C)}} \) is greatest.\n\n(iii) Find the percentage increase of that greatest ratio over the smallest ratio, giving your answer to two decimal places.