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The sum of two digit number …

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The sum of two digit number is 9. The number obtained by interchanging the two digits exceeds the given number by 45. Find the number

Posted by Sharvari Sorte 1 year, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

#Student _ 1 year, 6 months ago

Let the number at the ten's place be x and that at the one's place be y. Number obtained = 10x + y The sum of the digits in a two-digits number is 9. .....(I) The number obtained by interchanging the digits exceeds the original number by 27. 10y+x-(10x+y)=27 9(y-x)=27. Y-x=3 .......(ll) Adding (I) and (II) 2y=12 and y=6 x = 3. Hence thr required no is 36

Dawn To Dusk Twilight Classes 1 year, 6 months ago

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