n2 = 100 and time = 3 sec
Which means for n = 10, time = 3 secs
for n = 1200
time = 3*1200/10 = 3*120 = 360 secs
360 secs = 6 minutes
Since running for 100 units is different from running it for 1200 units, it gets delayed a bit.
So, the closest answer is 7 minutes
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