A body takes 5 minute to cool from \[80{}^\circ C\] to \[50{}^\circ C\ – McqOptions

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1.	A body takes 5 minute to cool from \[80{}^\circ C\] to \[50{}^\circ C\]. How much time it will take to cool from \[60{}^\circ C\] to \[30{}^\circ C\], if room temperature is \[20{}^\circ C\].
A.	40 minute
B.	9 minute
C.	30 minute
D.	20 minute
Answer» C. 30 minute

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