the average weight of A,B,C is 45 kgs. The avg weight of A and B is 40 kgs and of B and C is 43 kgs. Find the weight of B
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AVG of b and c is b+c÷2
AVG of a and b is a+b÷2
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AVG of a and b is a+b÷2
Look the pic for answer!!!
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(a+b+c)/2=45
a+b+c=90..........1
(b+c)/2=43
b+c=86...............2
(a+b)/2=40
a+b=80.........3
put this in eq=n 1
c=10
put this value in eq=n 3
B =76
a+b+c=90..........1
(b+c)/2=43
b+c=86...............2
(a+b)/2=40
a+b=80.........3
put this in eq=n 1
c=10
put this value in eq=n 3
B =76
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