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9 March, 11:19

When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round your answers to two decimal places.) (a) What is the temperature of the drink after 40 minutes? 12.51 Incorrect: Your answer is incorrect. °C (b) When will its temperature be 12°C?

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  1. 9 March, 11:37
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    a) 16 °C

    b) 30 min

    Explanation:

    a) you can calculate the increase per rule of three

    25 min - 10°C

    x - 12 °C

    x = (12 x 25) / 10 = 30 min

    b) also

    25 min - 10°C

    40 min - x

    x = (40 x 10) / 25 = 16 °C

    Hope this info is useful
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