Question

A pot of soup, currently 74°C above room temperature, is left out to cool. If that temperature

difference decreases by 5% per minute, then what will the difference be in 14 minutes?
If necessary, round your answer to the nearest tenth.
°C

Answer 1

A decrease of 5% is a multiplier of 0.95 (since 100% = 1). Like with the other question, compound the rate so after 14 minutes the multiplier is 0.95^14. Multiply this by the starting temperature to give 74 x 0.95^14 = 36°C, so a difference of 74 - 36 = 38°C

Answer 2

Answer:36.1

Explanation:

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