The temperature of a hot metallic rod is 278 °C. If it is made to cool off at the rate of 5 °C
every minute, then what will be its temperature after 15 minutes?
A shopkeeper purchased 144 pens at the rate of * 9 each and
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Step-by-step explanation:
temperature dropped in 15min=15×5=75
so temperature would be 278-75= 203 degree.
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