the average temperature of the first three days is 27° c and that of the next

Question

the average temperature of the first three days is 27° c and that of the next three is 29° c . if the average of the whole week is 28.5° c, the temperature of the last day of the week is ?

Options:

A . 24.5

B . 29.5

C . 31.5

D . 33.5

Answer: Option C
Explanation :

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