Question

A number consists of 2digits whose sum is 15. if 27 is subtracted from the number its digits are reversed. find the number​

Answer 1

Answer:

let one's digit be x

and ten's digit be y

therefore the number is 10y+x

also x+y=15 => y=15-x

10y+x-27=10x+y

put y=15-x

10(15-x)+x-27=10x+15-x

x=6

y=9

number=96

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