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Piyush365
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Asked: 2026-10-05T09:30:45+00:00 In:

The sum of the digits of a two-digit number is 9. Also, nine times this number is twice the number obtained by reversing the order of the digits. Find the number.

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Let the number be 10x + y. Then x + y = 9 and 9(10x + y) = 2(10y + x). The second simplifies to 88x – 11y = 0, giving y = 8x. Substituting yields x = 1, y = 8. The number is 18.

Ganita Manjari Part 2 chapter 13 question answer
Ganita Manjari Part 2 chapter 13 Two Variables, One Line solutions

chapter 13 two variablesdigits of a two-digit number is 9download class 9 maths ganita manjari part 2 book and solutionsncert solutions – ganita manjari part ii two variablesnine times this number is twice the numberone lineone line solutionsreversing the order of the digits
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