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
x−2y−8=0
And, x−5y+12=0
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B
x−2y+8=0
And, x−5y−12=0
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C
2x−y−8=0
And, 5x−y+12=0
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D
x−2y−12=0
And, x−5y+8=0
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Solution
The correct option is Ax−2y−8=0
And, x−5y+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 ⇒x−2y−8=0
Similarly, other statement says 5y is greater than x by 12. ⇒5y=x+12 ⇒0=x−5y+12
So, the two equations are x−2y−8=0
And, x−5y+12=0