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A two-digit number is 4 times the sum...

A two-digit number is 4 times the sum of its digits. If 18 is added to the number, the digits are reversed. Find the number.

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RD SHARMA-PAIR OF LINEAR EQUATIONS IN TWO VARIABLES-All Questions
  1. The sum of a two-digit number and the number formed by reversing th...

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  2. The sum of a two digit number and the number obtained by reversing ...

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  3. A two-digit number is 4 times the sum of its digits. If 18 is added...

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  4. A two-digit number is 4 more than 6 times the sum of its digits. If...

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  5. A two-digit number is 4 times the sum of its digits and twice the p...

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  6. The difference between two numbers is 26 and one number is three ti...

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

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  8. The numerator of a fraction is 4 less than the denominator. If the ...

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

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  10. A fraction becomes 1/3 if 1 is subtracted from both numerator and th...

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  11. If we add 1 to the numerator and subtract 1 from the denominator, a...

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  12. When 3 is added to the denominator and 2 is subtracted from the num...

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  13. If 2 is added to the numerator of a fraction, it reduces to 1//2 an...

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  14. The sum of the numerator and denominator of a fraction is 4 more th...

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  15. The sum of the numerator and denominator of a fraction is 3 less th...

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  16. The sum of the numerator and denominator of a fraction is 12. If th...

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  17. Five years hence, father’s age will be three times the age of his s...

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  18. A father is three times as old as his son. After twelve years, his ...

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  19. Ten years later, A will be twice as old as B and five years ago, A ...

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  20. A is elder to B by 2 years. A ′s   father F is twice as old a...

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