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20. Five years hence, the age of Jacob w...

20. Five years hence, the age of Jacob will be three times that of his son. Five years ago, ag was years Jacob's seven times that of his son. What are their present ages?

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The correct Answer is:
Hence, Jacob and his son's ages are 40 years and 10 years respectively.
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MBD -HARYANA BOARD-PAIR OF LINEAR EQUATIONS IN TWO VARIABLES-SHORT ANSWER TYPE QUESTIONS
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  2. Solve the following equations : 0.2x+0.3y=1.3 0.4x+0.5y=2.3

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  3. Solve the following equations : 3x-y=3 x-y=4

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  4. Solve the following equations : 1.5x-(5)/(3)y+2=0 (1)/(3)x+0.5y-(1...

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  5. Solve the following equations : sqrt2x+sqrt3y=0 sqrt3x-sqrt8y=0

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  6. Solve the pair of linear equations : (3x)/(2)-(5y)/(3)=-2 and (x)/(3...

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  7. Solve the following equations : (2x)/(3)+(y)/(2)=3 (x)/(2)-(2y)/(3...

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  8. Solve the following equations : (x)/(2)+(2y)/(3)=-1 (x)/(3)-(y)/(2...

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  9. Solve the following equation : (2x)/(3)-(3y)/(2)=-2 (x)/(2)+(4y)/(...

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  10. Solve the pair of linear equations 3x-y=3 and 7x+2y=20.

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  11. Solve the following pair of linear equations by elimination method : ...

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  12. Solve the pair of linear equations 2x+3y=11 and 2x-4y=-24.

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  14. The sum of the digits of a two-digit number is 9. Also, nine times ...

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  15. Draw the graphs of the equations x-y +1 = 0 and 3x+ 2y-12=0. Determine...

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  16. A fraction becomes 9/11 if 2 is added to both numerator and the den...

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  17. 20. Five years hence, the age of Jacob will be three times that of his...

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  18. A fraction becomes (1)/(3) when 1 is subtracted from the numerator and...

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  19. Solve the following pair of equations by reducing them to a pair of l...

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  20. Solve the following pair of equations by reducing them to a pair of li...

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