The mean temperature from Monday to Thursday is $$39.25^{\circ}C$$. The mean temperature from Thursday to Sunday is $$40.25^{\circ}C$$. If the sum of the daily temperatures of all the days during the week, from Monday to Sunday, is $$277.5^{\circ}C$$, then what is the temperature for Thursday?
The mean temperature from Monday to Thursday is $$39.25^{\circ}C$$.
total temperature from Monday to Thursday = $$39.25\times4$$ $$^{\circ}C$$
=Â $$157^{\circ}C$$Â Â Eq.(i)
The mean temperature from Thursday to Sunday is $$40.25^{\circ}C$$.
total temperature from Thursday to Sunday = $$40.25\times4$$ $$^{\circ}C$$
=Â $$161^{\circ}C$$Â Â Â Eq.(ii)
If the sum of the daily temperatures of all the days during the week, from Monday to Sunday, is $$277.5^{\circ}C$$.
total temperature from Monday to Sunday =Â $$277.5^{\circ}C$$Â Â Â Eq.(iii)
Temperature for Thursday =Â Eq.(i)+Eq.(ii)-Eq.(iii)
= (157+161-277.5) $$^{\circ}C$$
= (318-277.5) $$^{\circ}C$$
= 40.5Â $$^{\circ}C$$
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