Answers

2016-03-27T16:49:02+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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