Question

the average income of A and B, B and C and C and A
Rs 1200 Rs 800, and Rs 1000 respectively find the income of each

Answer 1

Hey Friends,
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The income of A & B =1200
The " " B & C =800
The " " C & A =1000

Therefore, A+B=1200 -----(i)
B+C=800 -----(ii)
C+A=1000 -----(iii)
By subtracting from eqn(i) to (ii)
A+B-B-C=400
A-C=400 ----(iv)
Add the eqtn(iii) & (iv)
A+C+A-C=1000+400
2A=1400 => A=700

Put the value of A in eqn(i)
We get, 700+B=1200

B=500
Again, Put the value of B in eqn(ii)
We get, 500+C=800
C=300

Hope it's help you!!!!
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