Answer
$16,000,000$ comparisons $* \frac{1}{12,000}$ seconds/comparison $=1333$ seconds
the average time approximates to 22.2 hours.
Work Step by Step
The average number of comparisons for a 32 million long list would be
16 million
Here is the calculation:
$16,000,000$ comparisons $* \frac{1}{12,000}$ seconds/comparison = 1333 seconds
the average time approximates to 22.2 hours.
