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Question

A number is greater than twice the other number by 8. Also, 5 times the smaller number exceeds the greater by 12. Convert these relations into simultaneous equations.

A
x2y8=0
And, x5y+12=0
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B
x2y+8=0
And, x5y12=0
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C
2xy8=0
And, 5xy+12=0
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D
x2y12=0
And, x5y+8=0
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Solution

The correct option is A x2y8=0
And, x5y+12=0
Let x and y be the two numbers such that x>y.
According to the question x is greater than 2y by 8.
x=2y+8
x2y8=0
Similarly, other statement says 5y is greater than x by 12.
5y=x+12
0=x5y+12
So, the two equations are
x2y8=0
And, x5y+12=0

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