The average temperature for the first 4-days of a week is 40,2º C and that of the last 4-days is 41.3°C. If the average temperature for the whole week is 40.6° C, then temperature on the fourth day is -
ক) 38.5 ° C
খ) 41.8° C
গ) 41.3°C
ঘ) 40.8° C
