Data Sufficiency

I am a real chocolate connoisseur but I do have problem with the word translation of statement 2 of the following DS problem:
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What is the maximum possible number of chocolate bars per hour produced by a machine?

(1) Currently, the machine produces 1,200 chocolate bars per hour
(2) If the chocolate bar production rate is increased from half the machine's maximum rate by 300 chocolate bars per hour, the rate is increased by 25%
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Can someone guide me through the thinking process? If there is a way of solving this problem without equations, please feel free to comment on that option as well.

Thank you~

ikaplan wrote: What is the maximum possible number of chocolate bars per hour produced by a machine?
(1) Currently, the machine produces 1,200 chocolate bars per hour
(2) If the chocolate bar production rate is increased from half the machine's maximum rate by 300 chocolate bars per hour, the rate is increased by 25%.

Statement 1: Currently, the machine produces 1,200 chocolate bars per hour.
The current rate does help us determine the maximum possible rate.
INSUFFICIENT.

Statement 2: If the chocolate bar production rate is increased from half the machine's maximum rate by 300 chocolate bars per hour, the rate is increased by 25%.
Let h = HALF the maximum rate.
Half the maximum rate increased by 300 bars per hour = h + 300.
Half the maximum rate increased by 25% = h + (25/100)(h) = (125/100)h = (5/4)h.
Since increasing half the maximum rate by 300 is the same as increasing it by 25%, we get:
h + 300 = (5/4)h.
Since we can solve for h -- HALF the maximum rate -- we can determine the FULL maximum rate.
SUFFICIENT.

The correct answer is B.

Maximum possible rate:
h + 300 = (5/4)h
4h + 1200 = 5h
1200 = h.
Since 1/2 the maximum rate = 1200, the maximum possible rate = 2400.

Statement 1) It doesn't give a clue about the maximum rate of the machine.

Statement 2) Running rate of machine = (1/2) maximum rate

To be increased by 300 chocolate bars per hour, the rate is increased by 25%

which means, (25/100)x [(1/2) maximum rate] = 300 chocolate bars per hour

which means (1/8) maximum rate] = 300 chocolate bars per hour

Therefore Maximum rate = 2400 chocolate bars per hour SUFFICIENT

[spoiler]Answer Option - B[/spoiler]