Question
Download Solution PDFThe average weight of 7 persons increases by 3 kg when a new person comes in place of one of them weighing 56 kg. What might be the weight of the new person?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The average weight of 7 persons increases by 3 kg when a new person replaces one of them weighing 56 kg.
Old person's weight = 56 kg
Increase in average = 3 kg
Number of people = 7
Formula used:
Total increase in weight = Increase in average × Number of people
New person's weight = Old person's weight + Total increase in weight
Calculation:
Total increase in weight = 3 × 7
⇒ Total increase in weight = 21 kg
New person's weight = 56 + 21
⇒ New person's weight = 77 kg
∴ The correct answer is option (2).
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