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Question

The pair of linear equations 5x+4y=20 and 10x+8y=16, will have

A
no solution
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B
many solutions
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C
two solutions
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D
one solution
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Solution

The correct option is A no solution
For the given pair of equations 5x+4y=20 and 10x+8y=16;
a1a2=510=12
b1c2=48=12
c1c2=2016=54
As the given pair of linear equation satisfies -
a1a2=b1b2c1c2
The graph will be a pair of parallel lines and so the pair of equations will have no solution.

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