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1. |
A body in air at 25 cools from 100 to 75 in 1 minute. What is the temperature of the body at the end of 3 minutes? (Take log(1.5)=0.4) |
A. | 40 |
B. | 47.5 |
C. | 42.5 |
D. | 50 |
Answer» C. 42.5 | |