TEAS Math Problem Solving Practice Test 1

Question : 8 of 40

Marks: +1, -0

A pasta salad was chilled in the refrigerator at

35^{∘} {\F}

overnight for 9 hours. The temperature of the pasta dish dropped from

86^{∘} {\F}

38^{∘} {\F}

.
What was the average rate of cooling per hour?

Solution:

The average rate of cooling is:

( (86^{∘}-38^{∘}) ) \/ 9 {\hrs} ; (48^{∘}) \/ 9

=5.33^{∘} {\F}

per hour.

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