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The average weight of 8 persons increased by 2.5 kg when a new person comes in place of one of them weighting 45 kg. What is the weight of the new person? |
63 kg 60 kg 65 kg 62 kg |
65 kg |
Total weight increased when a new person is added = 8 x 2.5 = 20 kg Weight of replaced person is 45 kg ⇒ Then weight of new person = 45 + 20 = 65 kg
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