Find the value of x and y for the pair of equations 2x + 5y = 15 and 2x - 5y = 5

2, -1

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, 1

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5, 1

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-5, 1

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Solution

The correct option is C
5, 1

2x + 5y = 15 ........(i)
2x - 5y = 5 ..........(ii)
Add (i) and (ii)
we get, 4x = 20
x = 5

Therefore, 2(5) + 5y = 15
5y = 15 - 10
5y = 5
y = 1

Therefore, x = 5, y = 1

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Similar questions

x + y = 3; 2 x + 5 y = 12

If x and y take only natural number values, find the number of (x,y) pairs satisfying the equation 2x+5y=100

2 x - 5 y = 13

2 x + y = - 5

y

x - 5 y = 15

2 x + 5 y = 0

x + y = 3

2 x + 5 y = 12

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