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The Average Weight of 8 Persons Increases by 2.5 Kg When a New Person Comes in Place of One of Them Weighing 65 Kg. What Must Be the Weight of the New Person? - Mathematics

MCQ

The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What must be the weight of the new person?

Options

  • 76 kg

  • 75.5 kg

  • 85 kg

  • 49.25 kg

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Solution

85 kg
Explanation:
Total weight increased
= (8 x 2.5) kg = 20kg
Weight of new person = ( 65 + 20) kg = 85 kg

Concept: Average and Age
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