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23 Dec 2025, 07:55
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Understand the growth => 9 hours => 64000/8000 = 8 = 2^3
At 7 Pm population = 64000
We want 256000:
256000 = 4*64000 = 2^2 *64000 => That's two doublings.
Since each doublings take 3 hours :
2*3 = 6 hours
Final answers => 7PM = 6hours = 1AM (next day) => E
At 7 Pm population = 64000
We want 256000:
256000 = 4*64000 = 2^2 *64000 => That's two doublings.
Since each doublings take 3 hours :
2*3 = 6 hours
Final answers => 7PM = 6hours = 1AM (next day) => E
23 Dec 2025, 08:00
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64000/8000 = 8 = 2^3
In 9 hours increased x8 (2^3), so multiply by 2 every 3 hours.
256000/8000 = 32 = 2^5
If multiply by 2 every 3 hours, to double 5 times (2^5), it takes 3*5=15 hours from 10am.
15 hours from 10am is 1am of the next day.
The answer is E
In 9 hours increased x8 (2^3), so multiply by 2 every 3 hours.
256000/8000 = 32 = 2^5
If multiply by 2 every 3 hours, to double 5 times (2^5), it takes 3*5=15 hours from 10am.
15 hours from 10am is 1am of the next day.
The answer is E
23 Dec 2025, 08:24
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8000*rate^9 = 64000
rate^9=8
rate^3=2
rate=cube root of 2
64000*rate^hours=256000
rate^hours=4
(cube root of 2)^hours=2^2
hours/3=2
hours=6
7pm + 6 hours = 1am of the next day
The correct answer is E
rate^9=8
rate^3=2
rate=cube root of 2
64000*rate^hours=256000
rate^hours=4
(cube root of 2)^hours=2^2
hours/3=2
hours=6
7pm + 6 hours = 1am of the next day
The correct answer is E
