Wickham is throwing a huge Christmas party. He invites 30 people. Everyone attends the party, and half of the guests bring a plus one (one other person). He plans to serve a 3-course meal for the guests. If he uses a new plate for every course, how many plates does he need in total for his guests? Think carefully first, then make a decision:
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The number of guests that bring a plus one is 30 / 2 = 15 guests. The total number of guests at the party, including the plus ones, is 30 + 15 = 45 guests. Since there are 3 courses, Wickham will need 45 * 3 = 135 plates. So, the answer is 135.
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