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The sum of father's age and twice the ag...

The sum of father's age and twice the age of his son is 70.If we double the age of the father and add it to the age of his son,the sum is 95.Find their present ages.

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CHETANA PUBLICATION-Linear equations in two variables-EXERCISE
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  2. To draw graph of 4x+5y=19,find y when x=1. Options: a) 4 b) 3 c) 2 d) ...

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  3. For simultaneous equations in variables x and y, Dx=49,Dy=-63, D=7 the...

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  4. Find the value of: |(5,3),(-7,-4)| a) -1 b) -41 c) 41 d) 1

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  5. To solve x+y=3,3x-2y-4=0 by determinant method, find D.

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  6. ax+by=c and mx+ny=d and an ne bm then these simultaneous equations hav...

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  7. The general form of linear equation in two variables is: a) ax+b=0 b...

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  8. …………...........is one of the solution of equation 3x-5y=10 : a) (0,2) ...

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  9. If 12x+13y=29 and 13x+12y=21 then the value of x+y is

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  10. Express the following information in mathematical form using x and y v...

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  11. Write Dx for the following simultaneous equations 3x+4y=8,x-2y=5 a) |(...

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  12. ………………..is the solution of given simultaneous equation x-y=7,x+y=11 a)...

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  13. When we consider two linear equations in two variables, such equations...

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  14. ………….is not a linear equation in two variables. a)x+7y=1 b)3x+4y-xy=0 ...

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  15. The linear equation in two variables is…………..a)3x+9=sqrt 2y+2 b)3x-4y+...

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  16. The pair of simultaneous equations from the following is…………………(1)2x+2...

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  17. Equation of X axis is……………..a)x=0 b)y=0 c)x=b d)y=a

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  18. The co-ordinates of the point of origin are……………a)(0,0) b)(1,0) c)(0,1...

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  19. If the value of the determinant |(m,-2),(2,1)| is 7, then value of m i...

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  20. x and y are the dimensions of a rectangle and its perimeter is 64. Thi...

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  21. The value of determinant |(5,2),(7,4)| is…………..a)6 b)-6 c)34 d)-34

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