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प्रश्न
The mean temperature of a town in a week in summer is 36°C. If the mean temperature of first 4 days of the week is 35°C and that of Saturday and Sunday is 37°C. Find the temperature on Friday.
योग
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उत्तर
The mean temperature of a town in a week in summer is 36°C.
Total temperature for the week = 7 × 36 = 252°C
The mean temperature of the first 4 days of the week is 35°C.
Total temperature for the first 4 days = 4 × 35 = 140°C
The mean temperature of Saturday and Sunday is 37°C.
Total temperature for Saturday and Sunday = 2 × 37 = 74°C
Temperature on Friday = Total week temperature − (Temperature of first 4 days + Temperature of Saturday and Sunday)
= 252 − 140 + 74
= 38°C
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