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a) DUnd Ciof A and B(c) 39 yearsThe average weight ol A. B and50 kg. If average weight of Aanis 48 kg and the average of Bandis 43 kg. then find the weight(b) 43 kg |
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Answer» Step-by-step explanation: (a+b+c)/3=50 a+b+c=150-----(1) (a+b)/2=40 a+b=80-------(2) (b+c)/2=43 b+c=86------(3) add(2) and (3) a+b+c+b=80+86=166 150+b=166 b=166-150=16 Kg the weight of b = 16 kg according to question(a+b+c)/3=50a+b+c=50×3a+b+c=150 ______(1)(a+b)/2=40a+b=40×2a+b=80______(2)(b+c)/2=43b+c=43×2b+c=86add (2) and (3)a+b+c+d= 80+86 =166putting the value of a+ b+c150+b = 166b= 166-150b= 16 kg (a+b+c)/3=50y=a+b+c=150.....(1)(a+b)/2=40a+b=80......(2)(b+c)=86.........(3)adding new(2)and(3)a+b+c+b=80+86=166150+b=166b=166-150=16kg A+B+c/3=50kgA+B+C=150kgA+B=80kgc=150-80c=70kg 16 kg is the right answer 16 kg is the correct answer |
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