The mean temperature from Monday to Thursday is 39.25°C. The mean temperature from Thursday to Sunday is 40.25°C. If the sum of the daily temperatures of all the days during the week, from Monday to Sunday, is 277.5°C, then what is the temperature for Thursday?

40.5°C

Sum of temperature from Monday to Thursday = 4 × 39.25 = 157°C

Sum of temperature from Thursday to Sunday = 4 × 40.25 = 161°C

Sum of temperature from Monday to Sunday =  277.5°C

Temperature of Thursday = ( 157 + 161 ) - 277.5 = 40.5°C