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temperature of a place at 4am was 3°. temperature increases by 1° in the first hour and decrease by 2° in the second hour. what was the temperature at 6am |
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Answer» Answer: At 12 noon, the TEMPERATURE =10°C above zero The temperature is decreasing at 2°C per hour 8°C below zero =−8°C So, total fall in temperature from 10°C to 0°C and from 0°C to −8°C=18°C Since the temperature falls 2°C in every ONE hour. Therefore, to decrease 18°C, time TAKEN = 18/2 = 9 hours Present time is 12 noon so, the time when the temperature is −8°C =12noon+9hours So, The time at which the temperature will be −8°C=9PM At 9 PM, the temperature is −8°C, the temperature at 12 midnight will be = (−8°C)+(−2°C×3hours) =(−8°C)+(−6°C) =−14°C So, at 12 midnight the temperature will be−14°C. |
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