Answers

2016-03-27T18:40:38+05:30
Using the given data,

a + b + c / 3 = 50 
a + b + c = 150 -- Eq.1

a + b / 2 = 40 
a + b = 80 -- Eq.2 

b + c / 2 = 45
b + c = 90 -- Eq.3

Eq.1 - Eq.2 
a + b + c - a - b = 150 - 80
c = 70 

Eq.1 - Eq.3
a + b + c - b - c = 150 - 90
a = 60 

Putting these values in Eq.1
a + b + c = 150
60 + b + 70 = 150
130 + b = 150
b = 150 - 130
b = 20 kg
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2016-03-27T18:45:46+05:30

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A + b + c / 3 = 50 a + b + c = 150 -- Eq.1
a + b / 2 = 40 a + b = 80 -- Eq.2 
b + c / 2 = 45b + c = 90 -- Eq.3
Eq.1 - Eq.2 a + b + c - a - b = 150 - 80c = 70 
Eq.1 - Eq.3a + b + c - b - c = 150 - 90a = 60 
Putting these values in Eq.1a + b + c = 15060 + b + 70 = 150130 + b = 150b = 150 - 130b = 20 kg
0
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