temperature
Level
pending
the average temperature for monday, tuesday, wednesday was 40 degree centigrade. the average for tuesday, wednesday and thursday was 41 degree centigrade.; if the temperature on thursday was 42 degree centigrade, what was the temperature on monday ?
The answer is 39.
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1 solution
sum of temperature on monday, tuesday, and wednesday = 40 * 3 = 120 degree centigrade sum of temperature on tuesday, wednesday and thursday = 41 * 3 = 123 degree centigrade also temperature on thursday = 42 degree centigrade now , temperature on monday = ? = 120 + 42 - 123 = 39 degree centigrade