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1. |
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 ? |
A. | 24.5 |
B. | 29.5 |
C. | 31.5 |
D. | 33.5 |
Answer» D. 33.5 | |