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1.
The average temperature for the first 4- days of a week is 40.2-degree Celcius and that of the last 4 days is 41.3-degree Celcius If the average temperature for the whole week is 40.6-degree Celcius then the temperature on the fourth day is-
- A. 38.5 Degree Celcius
- B. 38.5 Degree Celcius
- C. 38.5 Degree Celcius
- D. 38.5 Degree Celcius
Answer: Option D
Explanation:
Temperature on the fourth day
= [(40.2 × 4 + 41.3 × 4) - (40.6 × 7)]° C
= 41.8° C
= [(40.2 × 4 + 41.3 × 4) - (40.6 × 7)]° C
= 41.8° C
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