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Form the pair of linear equations in the...

Form the pair of linear equations in the following problems and find their solutions graphically.
5 pencils and 7 pens together cost Rs. 50, whereas 7 pencils and 5 pens together cost Rs. 46. Find the cost of one pencil and that of one pen.

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The correct Answer is:
Point of intersection is (3, 5); cost of a pencil is Rs. 3 and cost of a pen is Rs. 5.
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ZEN PUBLICATION-PAIR OF LINEAR EQUATIONS IN TWO VARIABLES-TEXTUAL EXERCISE 3.2
  1. Form the pair of linear equations in the following problems and find t...

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  2. Form the pair of linear equations in the following problems and find t...

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  3. On comparing the ratios a(1)/a(2), b(1)/b(2)" and "c(1)/c(2), find out...

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  4. On comparing the ratios a(1)/a(2), b(1)/b(2)" and "c(1)/c(2), find out...

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  5. On comparing the ratios (a(1))/(a(2)), (b(1))/(b(2)) and (c(1))/(c(2))...

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  6. On comparing the ratios (a(1))/(a(2)),(b(1))/(b(2)) and (c(1))/(c(2)) ...

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  7. On comparing the ratios (a(1))/(a(2)),(b(1))/(b(2)) and (c(1))/(c(2)) ...

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  8. On comparing the ratios (a(1))/(a(2)),(b(1))/(b(2)) and (c(1))/(c(2)) ...

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  9. On comparing the ratios a(1)/a(2), b(1)/b(2)," and "c(1)/c(2), find ou...

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  10. On comparing the ratios (a(1))/(a(2)),(b(1))/(b(2)) and (c(1))/(c(2)) ...

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  11. Which of the following pairs of linear equations are consistent/ incon...

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  12. Which of the following pairs of linear equations are consistent/incons...

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  13. Which of the following pairs of linear equations are consistent/incons...

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  14. Which of the following pairs of linear equations are consistent/incons...

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  15. Half the perimeter of a rectangular garden, whose length is 4 more tha...

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  16. Given the linear equation 3x+2y-8=0, write another linear equation in ...

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

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