I want only hilight que ans Q 7 The average weight of 7 girls is 45 kg If - Maths - Decimals

Question

I want only hilight que ans
Q 7 The average weight of 7 girls is 45 kg If one more girl is
included the average becomes 43 kg What is the weight of the
included girl?

Shruti Tyagi · Accepted Answer

Dear student,

Average weight of 7 girls=45 kg⇒Average weight of 7 girls=sum of weight of 7 girls7⇒45×7=sum of weight of 7 girls⇒sum of weight of 7 girls=315 kgWhen 1more girl is includedAverage of 8 girls=sum of weight of 8 girls8⇒43×8=sum of weight of 8 girls⇒sum of weight of 8 girls=344 kgThus, the weight of eigth girl=sum of weight of 8 girls-sum of weight of 7 girls=344 kg-315 kg⇒ The weight of eigth girl or included girl =29 kg

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I want only hilight que ans Q.7. The average weight of 7 girls is 45 kg. If one more girl is included. the average becomes 43 kg. What is the weight of the included girl?

I want only hilight que ans
Q.7. The average weight of 7 girls is 45 kg. If one more girl is included. the average becomes 43 kg. What is the weight of the included girl?