The average temperature of the first three days of a week is 27°C and that of the next three days is 29°C. If the weekly average is 28.5°C, what is the temperature on the last day?
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Answer:
31.5
Step-by-step explanation:
27+27+27+29+29+29+ * / 7= 28.5
168+*/ 7= 28.5
168+*=28.5×7
168+*=199.5
*=199.5-168
*=31.5
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