James gets bored with his game so decides to play a different one. That game promises 100 hours of gameplay but 80% of that is boring grinding. However, the expansion does add another 30 hours of enjoyable gameplay. How much enjoyable gameplay does James get? Let's think first. Chain of thought:
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The first game was 100 * .8 = 80 hours of grinding. So it was 100 - 80 = 20 hours of good gameplay. The expansion brought the time of good gameplay to 20 + 30 = 50 hours.
Therefore, the answer is 50.
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