The sum of temperature of the city for ten days = 38.3 + 40.3 + 30 + 28.7 + 35 + 37.4 + 38.4 + 39.3 + 40.2 + 12.2 = 339.8 ° C ⇒ The average temperature of the city = The sum of the temperature of the city/number of days ⇒ The average temperature of the city = 339.8/10 = 33.98°C ∴ The average temperature of the city for ten days is 33.98°C.