Math, asked by 2019sujay99, 11 months ago

Section-D
28. 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.
| 4
দুটা অংকৰ সংখ্যা এটাৰ অংক দুটাৰ সমষ্টি 9 | আকৌ এই সংখ্যাটোৰ নগুণ ল’লে সংখ্যাটোৰ অংক দুটাক সালসলনি কৰি
• পােৱা সংখ্যাটোৰ দুগুণৰ সমান হয়। সংখ্যাটো উলিওৱা ।।. ​

Answers

Answered by vandana6672
2

Answer:

let the number be xy where x be the tens digit and y be the unit digit .

if no get reversed then y be at the tens digit and x be at the unit digit.

if x+ y= 9

then x = 9- y

if 9xy = 2yx -(1)

then put value of x in equation 1

9y(9 -y)= 2y(9- y)

81y- 9y^2 = 18y - 2y^2

63y =7y^2

y= 9

Step-by-step explanation:

no =09

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