The mean temperature of Monday to Wednesday was 27 °C and of Tuesday to Thrusday was 24 °C. If the temperature on Thrusday was 2 / 3 rd of the temperature on Monday, What was the temperature on Thrusday ?
Solution : Mon + Tue + Wed = 81
Tue + Wed + Thu = 72
hence Mon - Thu = 9
Also Thu = ( 2 /3 ) * Mon
So the temperature of Thrusday = 18 °C
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