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Express the following statements in the form of simultaneous linear equations and solve them by drawing graphs :
(i) The sum of two numbers is 12 and their difference is 4. Find the numbers.

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The correct Answer is:
8 and 4
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If the sum of two number is 89 and their difference is 15, let's find the two numbers.

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Express the following statements in the form of simultaneous linear equations and solve them by drawing graphs : (ii) At present the age of a father is 28 years more than that of his son. After 10 years the age of father will be 3 times of the age of his son. Find the present ages of both father and son.

Express the following statements in the form of simultaneous linear equations and solve them by drawing graphs : (iv) A boat travels 56 km in 4 hours in favour of the current and 48 km in 8 hours against the current. Find the velocity of the boat in steady water and the velocity of the current.

Express the following statements in the form of simultaneous linear equations : The sum of two different numbers is 80 and 3 times of the difference of the two numbers is 20 more than the greater one.

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(xvii) Express the following statements in the form of simultaneous linear equations : (b) The one's unit digit of a two-digit number is twice of it's ten's unit digit. The number obtained by reversing the digits of the number is 18 more than the original number.

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CALCUTTA BOOK HOUSE-GRAPHS-EXERCISE - 3 Long-answer type questions
  1. Draw the graphs of the following simultaneous linear equations and fin...

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  2. Draw the graphs of the following simultaneous linear equations and fin...

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  3. Express the following statements in the form of simultaneous linear eq...

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  4. Express the following statements in the form of simultaneous linear eq...

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  5. Express the following statements in the form of simultaneous linear eq...

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  6. Express the following statements in the form of simultaneous linear eq...

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  7. Express the following statements in the form of simultaneous linear eq...

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  8. Solve the following simultaneous linear equations by drawing graphs fo...

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  9. Solve the following simultaneous linear equations by drawing graphs fo...

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  10. Solve the following simultaneous linear equations by drawing graphs fo...

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  11. Solve the following simultaneous linear equations by drawing graphs fo...

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  12. Solve the following simultaneous linear equations by drawing graphs fo...

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  13. Solve the following simultaneous linear equations by drawing graphs fo...

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  14. Solve the following simultaneous linear equations by drawing graphs fo...

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  15. Solve the following simultaneous linear equations by drawing graphs fo...

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  16. Solve the following simultaneous linear equations by drawing graphs fo...

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  17. Solve the following simultaneous linear equations by drawing graphs fo...

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  18. Solve the following simultaneous linear equations by drawing graphs fo...

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  19. Solve the following simultaneous linear equations by drawing graphs fo...

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  20. Solve the following simultaneous linear equations by drawing graphs fo...

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