Question

ice factory ice is freezed at -10 degree Celsius in a room.room temperature is 25° Celsius which can be lowered by 5 degree Celsius every hour. find the total time required to freeze the ice.​

Answer 1

we have decrease the temperature by 35 degree which will take 7 hours if we decrease the temperature 5 degree per hour 25-(-10) = 25+10

= 35/5=7 hours

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