MCQOPTIONS
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| 1. |
The average temperature of first three days of the week is 23° C; the average temperature of next three days is 24° C and the average temperature of whole week is 23.5° C. The temperature on the last day of the week is: |
| A. | 24.5°C |
| B. | 22.5°C |
| C. | 23.5°C |
| D. | 21.5°C |
| Answer» D. 21.5°C | |