find value of A, B and C.
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Answered by
1
Answer:
A=35kg
B=42kg
C=30kg
Step-by-step explanation:
A+B=77 - - (1)
B+C=72 - - (2)
A+C=65 - - (3)
(2)-(1)
A-C=5--(4)
A+C=65
2A=70
A=65kg
35+B=77
B=42
C=30
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Answered by
1
Answer:
35 kg, B = 42 kg, C = 30 kg
Step-by-step explanation:
A + B = 77 ----------- [ 1 ]
B + C = 72 ----------- [ 2 ]
A + C = 65 ----------- [ 3 ]
Adding all the 3 equations together:
A + B + B+ C + A + C = 77 + 72 + 65
2A + 2B + 2C = 214
A + B + C = 107 ----------- [ 4 ]
[ 4 ] - [ 1 ] :
C = 107 - 77 = 30
[ 4 ] - [ 2 ] :
A = 107 - 72 = 35
[ 4 ] - [ 3 ]:
B = 107 - 65 = 42
Answer: A = 35 kg, B = 42 kg, C = 30 kg
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